A suspected mugger attempts to escape from supporters of the opposition National Super Alliance (NASA) coalition during a protest calling for the sacking of election board officials involved in August's cancelled presidential vote, in Nairobi, Kenya October 6, 2017. REUTERS/Thomas Mukoya 

Francoise De Roy leaves the trial of a Polish youth accused of killing her son, Joe Van Holsbeeck, at the Brussels' Justice Palace September 23, 2008. The accused, identified as Adam G., was convicted of violent theft leading to death, but cleared of murder. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Guy Van Holsbeeck leaves the trial of a Polish youth accused of killing his son, Joe Van Holsbeeck, at the Brussels' Justice Palace, September 23, 2008. The accused, identified as Adam G., was convicted of violent theft leading to death, but cleared of murder. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Guy Van Holsbeeck and Françoise De Roy (R) talk to media at the end of the trial of a Polish youth accused of killing their son, Joe Van Holsbeeck, at the Brussels' Justice Palace, September 23, 2008. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Guy Van Holsbeeck (C) and a relative leave the trial of a Polish youth accused of killing his son, Joe Van Holsbeeck, at the Brussels' Justice Palace, September 23, 2008. The accused, identified as Adam G., was convicted of violent theft leading to death, but cleared of murder. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Relatives of a Polish youth accused of killing Joe Van Holsbeeck leave the Brussels' Justice Palace, September 23, 2008. The accused, identified as Adam G., was convicted of violent theft leading to death, but cleared of murder. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Relatives of a Polish youth accused of killing Joe Van Holsbeeck leave the Brussels' Justice Palace, September 23, 2008. The accused, identified as Adam G., was convicted of violent theft leading to death, but cleared of murder. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Guy Van Holsbeeck and Françoise De Roy (L) leave the trial of a Polish youth accused of killing their son, Joe Van Holsbeeck, at the Brussels' Justice Palace, September 23, 2008. The accused, identified as Adam G., was convicted of violent theft leading to death, but cleared of murder. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Guy Van Holsbeeck (L) walks past a relative of a Polish youth accused of killing his son, Joe Van Holsbeeck, at the Brussels' Justice Palace, September 23, 2008. The accused, identified as Adam G., was convicted of violent theft leading to death, but cleared of murder. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Guy Van Holsbeeck (L) walks past a relative of a Polish youth accused of killing his son, Joe Van Holsbeeck, at the Brussels' Justice Palace, September 23, 2008. The accused, identified as Adam G., was convicted of violent theft leading to death, but cleared of murder. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Guy Van Holsbeeck and Françoise De Roy (L) leave the trial of a Polish youth accused of killing their son, Joe Van Holsbeeck, at the Brussels' Justice Palace, September 23, 2008. The accused, identified as Adam G., was convicted of violent theft leading to death, but cleared of murder. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Guy Van Holsbeeck and Françoise De Roy (L) leave the trial of a Polish youth accused of killing their son, Joe Van Holsbeeck, at the Brussels' Justice Palace September 23, 2008. The accused, identified as Adam G., was convicted of violent theft leading to death, but cleared of murder. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

General view of a courtroom during the trial of a Polish youth known only as Adam G. who is suspected of killing Joe Van Holsbeeck, at the Palace of Justice in Brussels September 18, 2008. Van Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his MP3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Thierry Roge (BELGIUM) 

Frederic Clement de Clety (L) and Jean-Philippe Riviere (R), the lawyers of a Polish youth known only as Adam G. who is suspected of killing Joe Van Holsbeeck, sit in a courtroom at the Palace of Justice in Brussels September 18, 2008. Van Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his MP3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Thierry Roge (BELGIUM) 

Court of Justice President Karine Gerard presides over the trial of a Polish youth identified only as Adam G., who is suspected of killing Joe Van Holsbeeck, at the Palace of Justice in Brussels September 18, 2008. Van Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his MP3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Thierry Roge (BELGIUM) 

Guy Van Holsbeeck (C), father of Joe Van Holsbeeck, awaits the start of the trial of a Polish youth identified only as Adam G. who is suspected of killing his son, at the Palace of Justice in Brussels September 15, 2008. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Guy Van Holsbeeck and Françoise De Roy (L), the parents of Joe Van Holsbeeck, arrive at the trial of a Polish youth identified only as Adam G. who is suspected of killing their son, at the Palace of Justice in Brussels September 15, 2008. Van Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Court of Justice President Karine Gerard presides over the trial of a Polish youth identified only as Adam G., who is suspected of killing Joe Van Holsbeeck, at the Palace of Justice in Brussels September 15, 2008. Van Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Frederic Clement de Clety and Jean-Philippe Riviere (R), the lawyers of a Polish youth known only as Adam G. who is suspected of killing Joe Van Holsbeeck, await the start of Adam G.'s trial at the Palace of Justice in Brussels September 15, 2008. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Evidence is displayed at the start of the trial of a Polish youth identified only as Adam G., who is suspected of killing Joe Van Holsbeeck, at the Palace of Justice in Brussels September 15, 2008. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Frederic Clement de Clety and Jean-Philippe Riviere (R), the lawyers of a Polish youth known only as Adam G. who is suspected of killing Joe Van Holsbeeck, await the start of Adam G.'s trial at the Palace of Justice in Brussels September 15, 2008. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Evidence is displayed at the start of the trial of a Polish youth identified only as Adam G., who is suspected of killing Joe Van Holsbeeck, at the Palace of Justice in Brussels September 15, 2008. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Guy Van Holsbeeck and Françoise De Roy (L), the parents of Joe Van Holsbeeck, await the start of the trial of a Polish youth identified only as Adam G. who is suspected of killing their son, at the Palace of Justice in Brussels September 15, 2008. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Guy Van Holsbeeck (C), father of Joe Van Holsbeeck, awaits the start of the trial of a Polish youth identified only as Adam G. who is suspected of killing his son, at the Palace of Justice in Brussels September 15, 2008. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Françoise De Roy, mother of Joe Van Holsbeeck, arrives at the trial of a Polish youth identified only as Adam G. who is suspected of killing her son, at the Palace of Justice in Brussels September 15, 2008. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Guy Van Holsbeeck and Françoise De Roy (R), parents of Joe Van Holsbeeck, await the start of the trial of a Polish youth identified only as Adam G. who is suspected of killing their son, at the Palace of Justice in Brussels September 15, 2008. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

Guy Van Holsbeeck and Françoise De Roy (L), parents of Joe Van Holsbeeck, await the start of the trial of a Polish youth identified only as Adam G. who is suspected of killing their son, at the Palace of Justice in Brussels September 15, 2008. Holsbeeck, a 17-year-old teenager, was stabbed to death on April 12, 2006 after refusing to hand over his mp3 player to two muggers in Brussels' central railway station during rush hour. REUTERS/Francois Lenoir (BELGIUM) 

A woman is robbed as she returns with goods in the Kibera slum after post-election riots in Nairobi, January 5, 2008. Kenya's President Mwai Kibaki said on Saturday he was ready to form a government of national unity to end post-election violence that has killed 300 people and forced 250,000 to flee their homes. REUTERS/Noor Khamis (KENYA) 

A combination photo shows how a woman is robbed as she returns with goods in the Kibera slum after post-election riots and the muggers run away with her bag in Nairobi, January 5, 2008. Kenya's President Mwai Kibaki said on Saturday he was ready to form a government of national unity to end post-election violence that has killed 300 people and forced 250,000 to flee their homes. REUTERS/Noor Khamis (KENYA) 

Thousands of people gather in front the Brussels' Central railway station during a silent march in honour of Joe Van Holsbeeck, April 23, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. 

Thousands of people attend a silent march in honour of Joe Van Holsbeeck in central Brussels, April 23, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. 

People gather in front the Brussels' Central railway station during a silent march in honour of Joe Van Holsbeeck, April 23, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. 

Joe Van Holsbeeck's parents attend a silent march in honour of their son in central Brussels April 23, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. 

Thousands of people gather in front the Brussels' Central railway station during a silent march in honour of Joe Van Holsbeeck, April 23, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. REUTERS/Francois Lenoir 

People gather in front the Brussels' Central railway station during a silent march in honour of Joe Van Holsbeeck, April 23, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. REUTERS/Francois Lenoir 

Joe Van Holsbeeck's parents (L and C) are conforted by an unidentified man during a silent march in honour of their son in central Brussels, April 23, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. REUTERS/Francois Lenoir 

Flowers are displayed in honour of Joe Van Holsbeeck inside Brussels' Central railway station, April 23, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. REUTERS/Francois Lenoir 

A woman lights a candle in honour of Joe Van Holsbeeck inside Brussels' Central railway station April 23, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. REUTERS/Francois Lenoir 

Jean-Denis Lejeune (R), the father of Julie, a victim of Marc Dutroux talks to Joe Van Holsbeeck's parents during a silent march in honour of their son in central Brussels, April 23, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. REUTERS/Francois Lenoir 

Thousands of people attend a silent march in honour of Joe Van Holsbeeck in central Brussels, April 23, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. REUTERS/Francois Lenoir 

Joe Van Holsbeeck's parents (C and R) are comforted by an unidentified man during a silent march in honour of their son in central Brussels April 23, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. REUTERS/Francois Lenoir 

Joe Van Holsbeeck's parents attend a silent march in honour of their son in central Brussels April 23, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. REUTERS/Francois Lenoir 

People gather in front the Brussels' Central railway station during a silent march in honour of Joe Van Holsbeeck, April 23, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. REUTERS/Francois Lenoir 

People gather in front the Brussels' Central railway station during a silent march in honour of Joe Van Holsbeeck, April 23, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. REUTERS/Francois Lenoir 

Friends carry the coffin at the end of a funeral service for Joe Van Holsbeeck in Brussels, April 20, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in a public area at Brussels' Central railway station during rush hour. REUTERS/Benoit Doppagne/Pool 

Friends attend a funeral service for Joe Van Holsbeeck in Brussels, April 20, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in a public area at Brussels' Central railway station during rush hour. REUTERS/Benoit Doppagne/Pool 

Friends carry the coffin at the end of a funeral service for Joe Van Holsbeeck in Brussels, April 20, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in a public area at Brussels' Central railway station during rush hour. REUTERS/Benoit Doppagne/Pool 

Friends look at the coffin during a funeral service for Joe Van Holsbeeck in Brussels, April 20, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in a public area at Brussels' Central railway station during rush hour. REUTERS/Benoit Doppagne/Pool 

Friends mourn and pay tribute during a funeral service for Joe Van Holsbeeck in Brussels, April 20, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in a public area at Brussels' Central railway station during rush hour. REUTERS/Yves Herman 

A mourner holds the song and prayer sheet of Joe Van Holsbeeck's funeral service in Brussels, April 20, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. REUTERS/Yves Herman 

Family attend a funeral service for Joe Van Holsbeeck in Brussels April 20, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in a public area at Brussels' Central railway station during rush hour. REUTERS/Benoit Doppagne/Pool 

Friends and relatives attend a funeral service for Joe Van Holsbeeck in Brussels, April 20, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in a public area at Brussels' Central railway station during rush hour. REUTERS/Pool/Benoit Doppagne 

People look at a giant screen during a funeral service for Joe Van Holsbeeck in Brussels, April 20, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in a public area at Brussels' Central railway station during rush hour. REUTERS/Yves Herman 

Friends mourn during a funeral service for Joe Van Holsbeeck in Brussels, April 20, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in a public area at Brussels' Central railway station during rush hour. REUTERS/Yves Herman 

Friends mourn during a funeral service for Joe Van Holsbeeck in Brussels, April 20, 2006. Joe Van Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in a public area at Brussels' Central railway station during rush hour. REUTERS/Yves Herman 

A mourner holds the song and prayer sheet of Joe Van Holsbeeck's funeral service in Brussels, April 20, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in Brussels' Central railway station during rush hour. REUTERS/Yves Herman 

Friends mourn during a funeral service for Joe Van Holsbeeck in Brussels, April 20, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in a public area at Brussels' Central railway station during rush hour. REUTERS/Yves Herman 

Friends mourn during a funeral service for Joe Van Holsbeeck in Brussels, April 20, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in a public area at Brussels' Central railway station during rush hour. REUTERS/Yves Herman 

Friends carry the coffin after a funeral service for Joe Van Holsbeeck in Brussels, April 20, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in a public area at Brussels' Central railway station during rush hour. REUTERS/Yves Herman 

Family and relatives console each other after a funeral service for Joe Van Holsbeeck in Brussels, April 20, 2006. Holsbeeck, a 17-year-old teenager, was stabbed to death last week after refusing to hand over his mp3 player to two muggers in a public area at Brussels' Central railway station during rush hour. REUTERS/Yves Herman