Francois Fillon, former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, gives a television interview while attending a picnic in Saint-Paul as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas 

Supporters of Francois Fillon (L), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, hold a banner as he gives a television interview in Saint-Paul as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. Banner reads, "Stop the Manhunt". REUTERS/Laurent Capmas 

Francois Fillon (C), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, attends a picnic in Saint-Paul as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas 

Francois Fillon, former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, shakes hands with a supporter while attending a picnic in Saint-Paul as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas 

Francois Fillon, former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, gives a television interview while attending a picnic in Saint-Paul as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas 

Francois Fillon (L), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, arrives with Joseph Sinmale, mayor of Saint-Paul, to attend a picnic in Saint-Paul as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas 

Francois Fillon (L), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, shakes hands with a supporter while attending a picnic in Saint-Paul as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas 

Supporters of Francois Fillon, former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, hold a banner as he gives a television interview in Saint-Paul as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. Banner reads, "Stop the Manhunt". REUTERS/Laurent Capmas 

Francois Fillon (L), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, gives a television interview while attending a picnic in Saint-Paul as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas 

Francois Fillon (C), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, tastes a dish at a picnic in Saint-Paul as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas 

Francois Fillon (L), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, shakes hands with a supporter while attending a picnic in Saint-Paul as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas 

Francois Fillon (C), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, tastes a dish at a picnic in Saint-Paul as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas 

Journalists surround Francois Fillon (R), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, who leaves mass at Notre-Dame de la Paix church in Saint-Gilles les bains as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas

Francois Fillon (L), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, greets a man as he leaves mass at Notre-Dame de la Paix church in Saint-Gilles les bains as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas

Journalists surround Francois Fillon (R), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, who leaves mass at Notre-Dame de la Paix church in Saint-Gilles les bains as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas

Francois Fillon (C), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, leaves mass at Notre-Dame de la Paix church in Saint-Gilles les bains as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas

Francois Fillon (R), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, attends mass at Notre-Dame de la Paix church in Saint-Gilles les bains as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas

Journalists surround Francois Fillon (R), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, as he greets a woman after mass at Notre-Dame de la Paix church in Saint-Gilles les bains as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas

Francois Fillon (L), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, greets a man as he leaves mass at Notre-Dame de la Paix church in Saint-Gilles les bains as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas

Francois Fillon (R), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, greets a woman who attends mass at Notre-Dame de la Paix church in Saint-Gilles les bains as he campaigns on the French Indian Ocean island of the Reunion, February 12, 2017. REUTERS/Laurent Capmas

Francois Fillon (C), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm and fish bassins in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas

Francois Fillon (2ndR), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm and fish bassins in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (C), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, looks at produce during a visit to the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon, former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm and fish bassins in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (L), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm and fish bassins in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas

Francois Fillon (L), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm and fish bassins in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas

Francois Fillon (2ndR), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm and fish bassins in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

French gendarmes stand near a man who holds a placard to protest the visit by Francois Fillon (not pictured), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, to the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (2ndR), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, stands near a table with local produce during a visit to the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon, former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon, former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, smells produce during a visit to the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon, former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm and fish bassins in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (3rdR), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm and fish bassins in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (2ndR), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm and fish bassins in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon, former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm and fish bassins in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon, former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm and fish bassins in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (C), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm and fish bassins in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (C), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, looks at fruits and vegetables during a visit to the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Journalists surround Francois Fillon (C), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, during a visit to the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (C), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (2ndR), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm and fish bassins in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (C), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, looks at fruits and vegetables during a visit to the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (C), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, smells produce during a visit to the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (C), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

People hold a banner with the message, "Clean Politics - Yes. No to Corruption and False Jobs" to protest the visit by Francois Fillon (not pictured), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, to the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (3rdR), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (2ndR), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, visits the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (2ndL), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, tastes fruit during a visit to the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Francois Fillon (C), former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, looks at fruits and vegetables during a visit to the Akuo solar energy farm in Etang-Sale as he campaigns on the French Indian Ocean island of the Reunion, February 11, 2017. REUTERS/Laurent Capmas 

Molten lava erupts from the Piton de la Fournaise, one of the world's most active volcanoes February 3, 2017, on the French Indian Ocean Reunion Island. Picture taken February 3, 2017. REUTERS/Gilles Adt

Molten lava erupts from the Piton de la Fournaise, one of the world's most active volcanoes February 3, 2017, on the French Indian Ocean Reunion Island. Picture taken February 3, 2017. REUTERS/Gilles Adt

A long exposure shows molten lava flowing from the Piton de la Fournaise, one of the world's most active volcanoes, on the French island Reunion Island in the Indian Ocean, February 3, 2017. Picture taken February 3, 2017. REUTERS/Gilles Adt TPX IMAGES OF THE DAY 

Molten lava erupts from the Piton de la Fournaise, one of the world's most active volcanoes February 3, 2017, on the French Indian Ocean Reunion Island. Picture taken February 3, 2017. REUTERS/Gilles Adt

File picture shows French gendarmes and police inspecting a large piece of plane debris which was found on the beach in Saint-Andre, on the French Indian Ocean island of La Reunion, July 29, 2015. French prosecutor announced on Thursday that we can say with certainty that the wing part found on Saint-Andre beach was from missing Malaysia Airlines Flight MH370. REUTERS/Zinfos974/Prisca Bigot/Files TPX IMAGES OF THE DAY

Molten lava flows from the Piton de la Fournaise, one of the world's most active volcanoes, at dawn on the French Indian Ocean Reunion Island, August 25, 2015. The eruption which started on Monday is the fourth one this year for the Piton de la Fournaise, sending hot jets of molten lava spewing up from the peak. REUTERS/Gilles Adt TPX IMAGES OF THE DAY

Molten lava erupts from the Piton de la Fournaise, one of the world's most active volcanoes, on the French Indian Ocean Reunion Island, August 25, 2015. The eruption that started on Monday is the fourth one this year for the Piton de la Fournaise, sending hot jets of molten lava spewing up from the peak. REUTERS/Gilles Adt 

Two volcanologists stand on cooled volcanic rock as molten lava flows from the Piton de la Fournaise, one of the world's most active volcanoes, on the French Indian Ocean Reunion Island August 25, 2015. The eruption that started on Monday is the fourth one this year for the Piton de la Fournaise, sending hot jets of molten lava spewing up from the peak. REUTERS/Gilles Adt 

Molten lava erupts from the Piton de la Fournaise, one of the world's most active volcanoes, at dawn on the French Indian Ocean Reunion Island, August 25, 2015. The eruption which started on Monday, is the fourth one this year for the Piton de la Fournaise, sending hot jets of molten lava spewing up from the peak. REUTERS/Gilles Adt 

Molten lava erupts from the Piton de la Fournaise, one of the world's most active volcanoes, on the French Indian Ocean Reunion Island, overnight August 25, 2015. The eruption that started on Monday, is the fourth one this year for the Piton de la Fournaise, sending hot jets of molten lava spewing up from the peak. REUTERS/Gilles Adt 

Molten lava erupts from the Piton de la Fournaise, one of the world's most active volcanoes, at dawn on the French Indian Ocean Reunion Island, August 25, 2015. The eruption that started on Monday, is the fourth one this year for the Piton de la Fournaise, sending hot jets of molten lava spewing up from the peak. REUTERS/Gilles Adt TPX IMAGES OF THE DAY