Federal Police officers carry bags containing remains of corpses after a man accused to be involved in the missing of British journalist Dom Phillips and indigenous expert Bruno Pereira pointed their location to authorities, in Atalaia do Norte, Amazonas state, Brazil, June 15, 2022. REUTERS/Bruno Kelly 

Federal Police officers transport bags containing remains of corpses after a man accused to be involved with the missing of British journalist Dom Phillips and indigenous expert Bruno Pereira pointed their location to authorities, in Atalaia do Norte, Amazonas state, Brazil, June 15, 2022. REUTERS/Bruno Kelly 

Federal Police officers carry bags containing remains of corpses after a man accused to be involved in the missing of British journalist Dom Phillips and indigenous expert Bruno Pereira pointed their location to authorities, in Atalaia do Norte, Amazonas state, Brazil, June 15, 2022. REUTERS/Bruno Kelly 

Federal Police officers carry bags containing remains of corpses after a man accused to be involved in the missing of British journalist Dom Phillips and indigenous expert Bruno Pereira pointed their location to authorities, in Atalaia do Norte, Amazonas state, Brazil, June 15, 2022. REUTERS/Bruno Kelly 

Federal Police officers carry bags containing remains of corpses after a man accused to be involved with the missing of British journalist Dom Phillips and indigenous expert Bruno Pereira pointed their location to authorities, in Atalaia do Norte, Amazonas state, Brazil, June 15, 2022. REUTERS/Bruno Kelly 

Federal Police officers carry bags containing remains of corpses after a man accused to be envolved with in the missing of British journalist Dom Phillips and indigenous expert Bruno Pereira pointed their location to authorities, in Atalaia do Norte, Amazonas state, Brazil, June 15, 2022. REUTERS/Bruno Kelly 

Federal Police officers carry bags containing remains of corpses after a man accused to be envolved with the missing of British journalist Dom Phillips and indigenous expert Bruno Pereira pointed their location to authorities, in Atalaia do Norte, Amazonas state, Brazil, June 15, 2022. REUTERS/Bruno Kelly 

People look at plastic bags that are used to form the shape of corpses, to represent the people who died from not receiving the vaccine to combat COVID-19, during a protest against the government over a "VIP" vaccine scandal amid the coronavirus disease (COVID-19) outbreak, in Buenos Aires, Argentina, February 27, 2021. REUTERS/Agustin Marcarian 

Plastic bags are used to form the shape of corpses, to represent the people who died from not receiving the vaccine to combat COVID-19, during a protest against the government over a "VIP" vaccine scandal, amid the coronavirus disease (COVID-19) outbreak, in Buenos Aires, Argentina, February 27, 2021. REUTERS/Agustin Marcarian 

Soldiers stand next to a body bag containing a dead body after the earthquake and tsunami in Palu, Central Sulawesi, Indonesia, October 4, 2018. REUTERS/Athit Perawongmetha 

New York Police Department officers stand around a covered body after a shooting in midtown Manhattan in New York, U.S., May 18, 2016. REUTERS/Lucas Jackson 

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH A New York Police Department officer walks near a covered body after a shooting in midtown Manhattan in New York, U.S., May 18, 2016. REUTERS/Lucas Jackson 

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATHNew York Police Department officers stand near a covered body after a shooting in midtown Manhattan in New York, U.S., May 18, 2016. REUTERS/Lucas Jackson 

New York Police Department officers stand around a covered body after a shooting in midtown Manhattan in New York, U.S., May 18, 2016. REUTERS/Lucas Jackson 

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF DEATH Civil defense workers carry a body at the beach next to part of a new cycle lane that collapsed under crashing ocean waves, in Rio de Janeiro, Brazil, April 21, 2016. REUTERS/Ricardo Moraes 

Residents carry the body of a victim of a bomb attack at a checkpoint in the city of Hilla, south of Baghdad, March 6, 2016. REUTERS/Alaa Al-Marjani

People carry the dead body of a migrant on the beach of Siculiana, in Western Sicily, Italy February 19, 2016. Two migrants drowned off the coast of Sicily, Italy's coastguard said on Friday, adding to the thousands who have died in the Mediterranean in the last year as European Union leaders argued in Brussels over how to deal with the crisis. REUTERS/Guglielmo Mangiapane TPX IMAGES OF THE DAY

Members of emergency services carry a corpse of a victim in a body bag at the site of the two crashed trains near Bad Aibling in southwestern Germany, February 9, 2016. Several people died after two trains collided in the southern German state of Bavaria on Tuesday, a police spokesman said, adding about 100 people were also injured. REUTERS/Michael Dalder

Members of emergency services carry a corpse of a victim in a body bag at the site of the two crashed trains near Bad Aibling in southwestern Germany, February 9, 2016. Several people died after two trains collided in the southern German state of Bavaria on Tuesday, a police spokesman said, adding about 100 people were also injured. REUTERS/Michael Dalder

Members of emergency services stand next to a corpse of a victim in a body bag at the site of the two crashed trains near Bad Aibling in southwestern Germany, February 9, 2016. Several people died after two trains collided in the southern German state of Bavaria on Tuesday, a police spokesman said, adding about 100 people were also injured. REUTERS/Michael Dalder

Rescue workers carry a body after a bomb blast in a main street in Giza, Egypt, January 21, 2016. A bomb attack killed six people, including three policemen, on Thursday near a road leading to the pyramids in the Cairo suburb of Giza, security sources said. REUTERS/Mohamed Abd El Ghany 

A dead body in a body bag lies on a road after it was found by police patrolling the area in Ayutuxtepeque, on the outskirts of San Salvador, June 22, 2015. In El Salvador the number of homicides surged 70 percent last year, making the central American nation among the most violent countries in the world. Violence and murders have risen steadily since a 2012 truce between the two main street gangs began to fall apart. Months of reporting show killings in the suburbs of the capital, San Salvador, where powerful gangs known as maras control entire neighbourhoods. REUTERS/Jose Cabezas PICTURE 25 OF 35 - SEARCH "CABEZAS MURDER" FOR ALL IMAGES 

The husband and son (C) of Dafna Meir, 38, mourn as they stand besides her body during her funeral at a cemetery in Jerusalem January 18, 2016. Meir, a female resident of the West Bank Jewish settlement of Otniel, was stabbed to death in her home on Sunday when an assailant broke into her house and attacked her, the Israeli army and a local settlement official said. REUTERS/Ronen Zvulun

Family and friends surround the body of Dafna Meir, 38, during her funeral at a cemetery in Jerusalem January 18, 2016. Meir, a female resident of the West Bank Jewish settlement of Otniel, was stabbed to death in her home on Sunday when an assailant broke into her house and attacked her, the Israeli army and a local settlement official said. REUTERS/Ronen Zvulun TPX IMAGES OF THE DAY

The husband and children (C) of Dafna Meir, 38, mourn during her funeral ceremony in the West Bank Jewish settlement of Otniel January 18, 2016. Meir, a female resident of Otniel, was stabbed to death in her home on Sunday when an assailant broke into her house and attacked her, the Israeli army and a local settlement official said. REUTERS/Ronen Zvulun

Israeli men place the body of Dafna Meir, 38, during her funeral ceremony in the West Bank Jewish settlement of Otniel January 18, 2016. Meir, a female resident of Otniel, was stabbed to death in her home on Sunday when an assailant broke into her house and attacked her, the Israeli army and a local settlement official said. REUTERS/Ronen Zvulun

The husband and children (C) of Dafna Meir, 38, mourn near her body during her funeral ceremony in the West Bank Jewish settlement of Otniel January 18, 2016. Meir, a female resident of Otniel, was stabbed to death in her home on Sunday when an assailant broke into her house and attacked her, the Israeli army and a local settlement official said. REUTERS/Ronen Zvulun

An Israeli man looks through the window of a van carrying the body of Dafna Meir, 38, during her funeral ceremony in the West Bank Jewish settlement of Otniel January 18, 2016. Meir, a female resident of the Otniel settlement, was stabbed to death in her home on Sunday when an assailant broke into her house and attacked her, the Israeli army and a local settlement official said. REUTERS/Ronen Zvulun

Emergency workers remove a corpse in a body bag from the Splendid Hotel in Ouagadougou, Burkina Faso, January 16, 2016, after security forces retook the hotel from al Qaeda fighters who seized it in an assault that killed two dozen people from at least 18 countries and marked a major escalation of Islamist militancy in West Africa. REUTERS/Joe Penney TPX IMAGES OF THE DAY

Bags containing a body of two migrants, who died after a boat sank off the coast, lay in a navy base in Tripoli, Libya, December 21, 2015. REUTERS/Ismail Zitouny

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF DEATH AND INJURYA man attempts to identify bodies after what activists said were airstrikes carried out by the Russian air force in Idlib city, Syria December 20, 2015. REUTERS/Ammar Abdullah

A member of the homicide squad holds a plastic evidence bag containing money that belonged to a migrant who died during their journey to Europe, in the police department in Palermo, Italy November 4, 2015. Sandy and grimy, the watches, cell phones, family photos, $100 bills, and passports from Pakistan, Syria and Sudan are the tattered possessions of migrants who died at sea. Italian homicide police removed the items from the corpses of about 90 men, women and infants who perished aboard three different boats this summer. They preserved the personal effects - a beaded necklace, a Koran, a wedding picture, an Istanbul bus pass - as potential evidence to use in court against their smugglers, and in a bid to identify the corpses. REUTERS/Tony Gentile PICTURE 1 OF 15 FOR WIDER IMAGE STORY "TRACES OF MIGRANTS' UNFINISHED JOURNEYS" SEARCH "UNFINISHED JOURNEYS" FOR ALL IMAGES

A member of the homicide squad holds a plastic evidence bag containing a photograph that belonged to a migrant who died during their journey to Europe, in the police department in Palermo, Italy November 4, 2015. Sandy and grimy, the watches, cell phones, family photos, $100 bills, and passports from Syria, Pakistan and Sudan are the tattered possessions of migrants who died at sea. Italian homicide police removed the items from the corpses of about 90 men, women and infants who perished aboard three different boats this summer. They preserved the personal effects - a beaded necklace, a Koran, a wedding picture, an Istanbul bus pass - as potential evidence to use in court against their smugglers, and in a bid to identify the corpses. REUTERS/Tony Gentile PICTURE 7 OF 15 FOR WIDER IMAGE STORY "TRACES OF MIGRANTS' UNFINISHED JOURNEYS" SEARCH "UNFINISHED JOURNEYS" FOR ALL IMAGES TPX IMAGES OF THE DAY

A member of the homicide squad holds a plastic evidence bag containing dollar bills which belonged to a migrant who died during their journey to Europe, in the police department in Palermo, Italy November 4, 2015. Sandy and grimy, the watches, cell phones, family photos, $100 bills, and passports from Syria, Pakistan and Sudan are the tattered possessions of migrants who died at sea. Italian homicide police removed the items from the corpses of about 90 men, women and infants who perished aboard three different boats this summer. They preserved the personal effects - a beaded necklace, a Koran, a wedding picture, an Istanbul bus pass - as potential evidence to use in court against their smugglers, and in a bid to identify the corpses. REUTERS/Tony Gentile PICTURE 3 OF 15 FOR WIDER IMAGE STORY "TRACES OF MIGRANTS' UNFINISHED JOURNEYS" SEARCH "UNFINISHED JOURNEYS" FOR ALL IMAGES

A member of the homicide squad holds a plastic evidence bag containing a mobile phone, watch and headphones which belonged to a migrant who died during their journey to Europe, in the police department in Palermo, Italy November 4, 2015. Sandy and grimy, the watches, cell phones, family photos, $100 bills, and passports from Syria, Pakistan and Sudan are the tattered possessions of migrants who died at sea. Italian homicide police removed the items from the corpses of about 90 men, women and infants who perished aboard three different boats this summer. They preserved the personal effects - a beaded necklace, a Koran, a wedding picture, an Istanbul bus pass - as potential evidence to use in court against their smugglers, and in a bid to identify the corpses. REUTERS/Tony Gentile PICTURE 4 OF 15 FOR WIDER IMAGE STORY "TRACES OF MIGRANTS' UNFINISHED JOURNEYS" SEARCH "UNFINISHED JOURNEYS" FOR ALL IMAGES

A member of the homicide squad holds a plastic evidence bag containing unclaimed items, that belonged to migrants who died during their journey to Europe, in the police department in Palermo, Italy November 4, 2015. Sandy and grimy, the watches, cell phones, family photos, $100 bills, and passports from Syria, Pakistan and Sudan are the tattered possessions of migrants who died at sea. Italian homicide police removed the items from the corpses of about 90 men, women and infants who perished aboard three different boats this summer. They preserved the personal effects - a beaded necklace, a Koran, a wedding picture, an Istanbul bus pass - as potential evidence to use in court against their smugglers, and in a bid to identify the corpses. REUTERS/Tony Gentile PICTURE 15 OF 15 FOR WIDER IMAGE STORY "TRACES OF MIGRANTS' UNFINISHED JOURNEYS" SEARCH "UNFINISHED JOURNEYS" FOR ALL IMAGES TPX IMAGES OF THE DAY

A member of the homicide squad holds a plastic evidence bag containing unclaimed items that belonged to a migrant who died during their journey to Europe, in the police department in Palermo, Italy November 4, 2015. Sandy and grimy, the watches, cell phones, family photos, $100 bills, and passports from Syria, Pakistan and Sudan are the tattered possessions of migrants who died at sea. Italian homicide police removed the items from the corpses of about 90 men, women and infants who perished aboard three different boats this summer. They preserved the personal effects - a beaded necklace, a Koran, a wedding picture, an Istanbul bus pass - as potential evidence to use in court against their smugglers, and in a bid to identify the corpses. REUTERS/Tony Gentile PICTURE 8 OF 15 FOR WIDER IMAGE STORY "TRACES OF MIGRANTS' UNFINISHED JOURNEYS" SEARCH "UNFINISHED JOURNEYS" FOR ALL IMAGES

A member of the homicide squad holds a plastic evidence bag containing a mobile phone that belonged to a migrant who died during their journey to Europe, in the police department in Palermo, Italy November 4, 2015. Sandy and grimy, the watches, cell phones, family photos, $100 bills, and passports from Syria, Pakistan and Sudan are the tattered possessions of migrants who died at sea. Italian homicide police removed the items from the corpses of about 90 men, women and infants who perished aboard three different boats this summer. They preserved the personal effects - a beaded necklace, a Koran, a wedding picture, an Istanbul bus pass - as potential evidence to use in court against their smugglers, and in a bid to identify the corpses. REUTERS/Tony Gentile PICTURE 2 OF 15 FOR WIDER IMAGE STORY "TRACES OF MIGRANTS' UNFINISHED JOURNEYS" SEARCH "UNFINISHED JOURNEYS" FOR ALL IMAGES

A member of the homicide squad holds a plastic evidence bag containing unclaimed items, including medication, that belonged to a migrant who died during their journey to Europe, in the police department in Palermo, Italy November 4, 2015. Sandy and grimy, the watches, cell phones, family photos, $100 bills, and passports from Syria, Pakistan and Sudan are the tattered possessions of migrants who died at sea. Italian homicide police removed the items from the corpses of about 90 men, women and infants who perished aboard three different boats this summer. They preserved the personal effects - a beaded necklace, a Koran, a wedding picture, an Istanbul bus pass - as potential evidence to use in court against their smugglers, and in a bid to identify the corpses. REUTERS/Tony Gentile PICTURE 6 OF 15 FOR WIDER IMAGE STORY "TRACES OF MIGRANTS' UNFINISHED JOURNEYS" SEARCH "UNFINISHED JOURNEYS" FOR ALL IMAGES

A member of the homicide squad holds a plastic evidence bag containing unclaimed photos that belonged to migrants who died during their journey to Europe, in the police department in Palermo, Italy November 4, 2015. Sandy and grimy, the watches, cell phones, family photos, $100 bills, and passports from Syria, Pakistan and Sudan are the tattered possessions of migrants who died at sea. Italian homicide police removed the items from the corpses of about 90 men, women and infants who perished aboard three different boats this summer. They preserved the personal effects - a beaded necklace, a Koran, a wedding picture, an Istanbul bus pass - as potential evidence to use in court against their smugglers, and in a bid to identify the corpses. REUTERS/Tony Gentile PICTURE 5 OF 15 FOR WIDER IMAGE STORY "TRACES OF MIGRANTS' UNFINISHED JOURNEYS" SEARCH "UNFINISHED JOURNEYS" FOR ALL IMAGES

A member of the homicide squad holds plastic evidence bags containing unclaimed items, including photos, money and a travel pass, that belonged to a migrant who died during their journey to Europe, in the police department in Palermo, Italy November 4, 2015. Sandy and grimy, the watches, cell phones, family photos, $100 bills, and passports from Syria, Pakistan and Sudan are the tattered possessions of migrants who died at sea. Italian homicide police removed the items from the corpses of about 90 men, women and infants who perished aboard three different boats this summer. They preserved the personal effects - a beaded necklace, a Koran, a wedding picture, an Istanbul bus pass - as potential evidence to use in court against their smugglers, and in a bid to identify the corpses. REUTERS/Tony Gentile PICTURE 13 OF 15 FOR WIDER IMAGE STORY "TRACES OF MIGRANTS' UNFINISHED JOURNEYS" SEARCH "UNFINISHED JOURNEYS" FOR ALL IMAGES TPX IMAGES OF THE DAY

A member of the homicide squad holds plastic evidence bags containing unclaimed items that belonged to migrants who died during their journey to Europe, in the police department in Palermo, Italy November 4, 2015. Sandy and grimy, the watches, cell phones, family photos, $100 bills, and passports from Syria, Pakistan and Sudan are the tattered possessions of migrants who died at sea. Italian homicide police removed the items from the corpses of about 90 men, women and infants who perished aboard three different boats this summer. They preserved the personal effects - a beaded necklace, a Koran, a wedding picture, an Istanbul bus pass - as potential evidence to use in court against their smugglers, and in a bid to identify the corpses. REUTERS/Tony Gentile PICTURE 14 OF 15 FOR WIDER IMAGE STORY "TRACES OF MIGRANTS' UNFINISHED JOURNEYS" SEARCH "UNFINISHED JOURNEYS" FOR ALL IMAGES

A member of the homicide squad holds a plastic evidence bag containing money and a mobile phone that belonged to a migrant who died during their journey to Europe, in the police department in Palermo, Italy November 4, 2015. Sandy and grimy, the watches, cell phones, family photos, $100 bills, and passports from Syria, Pakistan and Sudan are the tattered possessions of migrants who died at sea. Italian homicide police removed the items from the corpses of about 90 men, women and infants who perished aboard three different boats this summer. They preserved the personal effects - a beaded necklace, a Koran, a wedding picture, an Istanbul bus pass - as potential evidence to use in court against their smugglers, and in a bid to identify the corpses. REUTERS/Tony Gentile PICTURE 10 OF 15 FOR WIDER IMAGE STORY "TRACES OF MIGRANTS' UNFINISHED JOURNEYS" SEARCH "UNFINISHED JOURNEYS" FOR ALL IMAGES

A member of the homicide squad holds a plastic evidence bag containing unclaimed items, that belonged to migrants who died during their journey to Europe, in the police department in Palermo, Italy November 4, 2015. Sandy and grimy, the watches, cell phones, family photos, $100 bills, and passports from Syria, Pakistan and Sudan are the tattered possessions of migrants who died at sea. Italian homicide police removed the items from the corpses of about 90 men, women and infants who perished aboard three different boats this summer. They preserved the personal effects - a beaded necklace, a Koran, a wedding picture, an Istanbul bus pass - as potential evidence to use in court against their smugglers, and in a bid to identify the corpses. REUTERS/Tony Gentile PICTURE 9 OF 15 FOR WIDER IMAGE STORY "TRACES OF MIGRANTS' UNFINISHED JOURNEYS" SEARCH "UNFINISHED JOURNEYS" FOR ALL IMAGES

A member of the homicide squad holds a plastic evidence bag containing jewellery that belonged to a migrant who died during their journey to Europe, in the police department in Palermo, Italy November 4, 2015. Sandy and grimy, the watches, cell phones, family photos, $100 bills, and passports from Syria, Pakistan and Sudan are the tattered possessions of migrants who died at sea. Italian homicide police removed the items from the corpses of about 90 men, women and infants who perished aboard three different boats this summer. They preserved the personal effects - a beaded necklace, a Koran, a wedding picture, an Istanbul bus pass - as potential evidence to use in court against their smugglers, and in a bid to identify the corpses. REUTERS/Tony Gentile PICTURE 12 OF 15 FOR WIDER IMAGE STORY "TRACES OF MIGRANTS' UNFINISHED JOURNEYS" SEARCH "UNFINISHED JOURNEYS" FOR ALL IMAGES

A member of the homicide squad holds a plastic evidence bag containing a mobile phone and money that belonged to a migrant who died during their journey to Europe, in the police department in Palermo, Italy November 4, 2015. Sandy and grimy, the watches, cell phones, family photos, $100 bills, and passports from Syria, Pakistan and Sudan are the tattered possessions of migrants who died at sea. Italian homicide police removed the items from the corpses of about 90 men, women and infants who perished aboard three different boats this summer. They preserved the personal effects - a beaded necklace, a Koran, a wedding picture, an Istanbul bus pass - as potential evidence to use in court against their smugglers, and in a bid to identify the corpses. REUTERS/Tony Gentile PICTURE 11 OF 15 FOR WIDER IMAGE STORY "TRACES OF MIGRANTS' UNFINISHED JOURNEYS" SEARCH "UNFINISHED JOURNEYS" FOR ALL IMAGES

Libyan Red Crescent workers in Tripoli port carry a bag containing a body of one of the migrants who died after a boat transporting them sank off the sea, in Libya September 18, 2015. REUTERS/Ismail Zitouny 

Libyan Red Crescent workers in Tripoli port carry a bag containing a body of one of the migrants who died after a boat transporting them sank off the sea, in Libya September 18, 2015. REUTERS/Ismail Zitouny 

Employees carry the body of a drowned Syrian migrant out of the morgue in Mugla, Turkey, September 3, 2015. Turkey has won international praise for taking in two million refugees since the Syrian civil war began in March 2011, spending $6 billion caring for them and receiving just $400 million in outside aid. But it has warned it is reaching capacity, and thousands are now making the perilous journey by boat from Turkey to Greece in a bid to enter Europe. REUTERS/Murad Sezer

Employees transport the body of a drowned Syrian migrant out of the morgue in Mugla, Turkey, September 3, 2015. Turkey has won international praise for taking in two million refugees since the Syrian civil war began in March 2011, spending $6 billion caring for them and receiving just $400 million in outside aid. But it has warned it is reaching capacity, and thousands are now making the perilous journey by boat from Turkey to Greece in a bid to enter Europe. REUTERS/Murad Sezer

A resident walks past body bags symbolizing the 19 people who were killed two weeks ago, at Paulista Avenue in Sao Paulo's financial centre, Brazil, August 28, 2015. Brazilian police are investigating whether the string of 19 murders in metropolitan Sao Paulo on August 13 night were a coordinated act of revenge by off-duty officers following the nearby deaths of two colleagues in the previous week. REUTERS/Paulo Whitaker 

Activists of NGO 'Rio de Paz' attend a demonstration in solidarity with relatives of 19 people killed two weeks ago at Paulista Avenue in Sao Paulo's financial centre, Brazil, August 28, 2015. Brazilian police are investigating whether the string of 19 murders in metropolitan Sao Paulo on August 13 night were a coordinated act of revenge by off-duty officers following the nearby deaths of two colleagues in the previous week. The banner reads "Who killed the 19?" REUTERS/Paulo Whitaker 

Activists of NGO 'Rio de Paz' attend a demonstration in solidarity with relatives of 19 people killed two weeks ago at Paulista Avenue in Sao Paulo's financial centre, Brazil, August 28, 2015. Brazilian police are investigating whether the string of 19 murders in metropolitan Sao Paulo on August 13 night were a coordinated act of revenge by off-duty officers following the nearby deaths of two colleagues in the previous week. The banner reads "Who killed the 19?" REUTERS/Paulo Whitaker 

Activists of NGO 'Rio de Paz' attend a demonstration in solidarity with relatives of 19 people killed two weeks ago at Paulista Avenue in Sao Paulo's financial centre, Brazil, August 28, 2015. Brazilian police are investigating whether the string of 19 murders in metropolitan Sao Paulo on August 13 night were a coordinated act of revenge by off-duty officers following the nearby deaths of two colleagues in the previous week. The banner reads "Who killed the 19?" Picture taken with fish-eye lens. REUTERS/Paulo Whitaker 

Residents walk past body bags symbolizing the 19 people who were killed two weeks ago, at Paulista Avenue in Sao Paulo's financial centre, Brazil, August 28, 2015. Brazilian police are investigating whether the string of 19 murders in metropolitan Sao Paulo on August 13 night were a coordinated act of revenge by off-duty officers following the nearby deaths of two colleagues in the previous week. REUTERS/Paulo Whitaker 

Residents walk past body bags symbolizing the 19 people who were killed two weeks ago, at Paulista Avenue in Sao Paulo's financial centre, Brazil, August 28, 2015. Brazilian police are investigating whether the string of 19 murders in metropolitan Sao Paulo on August 13 night were a coordinated act of revenge by off-duty officers following the nearby deaths of two colleagues in the previous week. REUTERS/Paulo Whitaker 

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH

Relatives gather around the bodies of members of the anti-Houthi Popular Resistance Committees, killed in fighting against Houthi fighters, in Yemen's southwestern city of Taiz June 30, 2015. REUTERS/Stringer

French crime scene investigators, Gendarmes and rescue forces are seen at work next to a black plastic sheet outside a gas company site at the industrial area of Saint-Quentin-Fallavier, near Lyon, France, June 26, 2015. A decapitated head covered in Arabic writing was found at a a site belonged to Air Products, a U.S.-based industrial gases technology company, in southeast France on Friday, police sources and French media said, after two assailants rammed a car into the premises, exploding gas containers. REUTERS/Emmanuel Foudrot TPX IMAGES OF THE DAY

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH

Relatives sit beside a body of a deceased who died due to an intense heat wave, while waiting for an ambulance, at Edhi Foundation morgue in Karachi, Pakistan, June 22, 2015. An intense heat wave killed more than 120 people over the weekend in Pakistan's southern city of Karachi, officials said on Monday, as the electricity grid crashed during the first days of the Muslim holy month of Ramadan. REUTERS/Akhtar Soomro

Forensic policemen carry body bags with human remains found at the site of human trafficking camps in the jungle close the Thailand border after they brought them to a police camp near Wang Kelian in northern Malaysia May 25, 2015. Malaysian authorities have found 139 graves, and signs of torture, in more than two dozen squalid human trafficking camps suspected to have been used by gangs smuggling migrants across the border with Thailand, the country's police chief said on Monday. REUTERS/Damir Sagolj TPX IMAGES OF THE DAY