A group of over 250 women march through the center of Bujumbura, Burundi, calling for the release of protesters arrested during demonstrations, Sunday May 10, 2015. At least 13 people have died and 216 have been wounded in protests since April 25, when the ruling party announced it had nominated President Pierre Nkurunziza as its presidential candidate. (Photo by Jerome Delay/AP Photo)

Local residents walk past police in the Musaga district of Bujumbura, Burundi, Sunday May 10, 2015. (Photo by Jerome Delay/AP Photo)

Police keeps watch as protesters march through the Musaga district of Bujumbura, in Burundi, Monday, May 11, 2015. Police and army negotiated with over 2000 protesters to allow delivery trucks to enter the city. One person was killed in a clash with Burundi's police on Sunday in demonstrations in the capital, Bujumbura, as the government ordered a ban on any further street protests over President Pierre Nkurunziza's bid for a third term in power. (Photo by Jerome Delay/AP Photo)

A soldier breaks through a police blockade as protesters march through the Musaga district of Bujumbura, in Burundi, Monday, May 11, 2015. (Photo by Jerome Delay/AP Photo)

A demonstrator argues with police protesters march through the Musaga district of Bujumbura, in Burundi, Monday, May 11, 2015. (Photo by Jerome Delay/AP Photo)

A group of over 250 women march through the center of Bujumbura, Burundi, calling for the release of protesters arrested during demonstrations, Sunday May 10, 2015. (Photo by Jerome Delay/AP Photo)

A policeman holds stones as he cleans a barricade which was set up by protesters during a protest against president Pierre Nkurunziza in Bujumbura, Burundi, May 10, 2015. East African leaders will hold a summit in Tanzania on May 13 aimed at breaking the political deadlock in Burundi and ensuring the country holds peaceful elections, Tanzania's presidency says. (Photo by Goran Tomasevic/Reuters)

Woman sing in front of police during a protest against president Pierre Nkurunziza in Bujumbura, Burundi, May 10, 2015. (Photo by Goran Tomasevic/Reuters)

Woman sit in front of police during a protest by women against president Pierre Nkurunziza in Bujumbura, Burundi, May 10, 2015. (Photo by Goran Tomasevic/Reuters)

Woman march during a protest by women against president Pierre Nkurunziza in Bujumbura, Burundi, May 10, 2015. (Photo by Goran Tomasevic/Reuters)

A woman dances as she carries her child in front of police during a protest by women against president Pierre Nkurunziza in Bujumbura, Burundi, May 10, 2015. (Photo by Goran Tomasevic/Reuters)

A policeman throws a stone as he clears a barricade which was set up by protesters in Bujumbura, Burundi, May 10, 2015. (Photo by Goran Tomasevic/Reuters)

Woman sing in front of police during a protest by women against president Pierre Nkurunziza in Bujumbura, Burundi, May 10, 2015. (Photo by Goran Tomasevic/Reuters)

A policeman carries a shield as a soldiers walk behind while protesters throw stones during a protest against president Pierre Nkurunziza in Bujumbura, Burundi, May 10, 2015. (Photo by Goran Tomasevic/Reuters)

Policemen walk on a street after they cleared barricades set up by protesters in Bujumbura, Burundi, May 10, 2015. (Photo by Goran Tomasevic/Reuters)

Soldiers stand as policemen clear barricades in Bujumbura, Burundi, May 10, 2015. (Photo by Goran Tomasevic/Reuters)

A woman and her daughter walk past policemen in Bujumbura, Burundi, May 10, 2015. (Photo by Goran Tomasevic/Reuters)

Women sing and dance in front of police during a protest by women against president Pierre Nkurunziza in Bujumbura, Burundi, May 10, 2015. (Photo by Goran Tomasevic/Reuters)

Woman sit in front of police during a protest by women against president Pierre Nkurunziza in Bujumbura, Burundi, May 10, 2015. (Photo by Goran Tomasevic/Reuters)

A women sings and dance in front of police during a protest by women against president Pierre Nkurunziza in Bujumbura, Burundi, May 10, 2015. (Photo by Goran Tomasevic/Reuters)

A protester throws stones at police during a protest against president Pierre Nkurunziza in Bujumbura, Burundi, May 10, 2015. (Photo by Goran Tomasevic/Reuters)

A UNHCR official (L) receives Burundian refugees as they arrive at Kagunga village in Lake Tanganyika, in Tanzania's western region of Kigoma, May 9, 2015. Officials from the UNHCR told local reporters that more than 25,000, Burundians have fled their country and cross the border to Kigoma as they fear the tiny central African country might descend into violence ahead of the presidential election scheduled for June. (Photo by Reuters/Stringer)

A man carrying a sack passes by policeman along a street in Bujumbura, Burundi, May 11, 2015. (Photo by Goran Tomasevic/Reuters)

A protester wears grass around his face to obscure his identity during a protest against President Pierre Nkurunziza's decision to run for a third term, in Bujumbura, Burundi, May 11, 2015. (Photo by Goran Tomasevic/Reuters)

A protester wears a mask to hide his identity during a protest against President Pierre Nkurunziza's decision to run for a third term, in Bujumbura, Burundi, May 11, 2015. (Photo by Goran Tomasevic/Reuters)

A police officer with a bag depicted the image of US President Barack Obama, stands on patrol as protesters march through the Musaga district of Bujumbura, in Burundi, Monday, May 11, 2015. (Photo by Jerome Delay/AP Photo)

Police stand on patrol as protesters march through the Musaga district of Bujumbura, in Burundi, Monday, May 11, 2015. (Photo by Jerome Delay/AP Photo)

Protesters gesture as they march through the Musaga district of Bujumbura, in Burundi, Monday, May 11, 2015. (Photo by Jerome Delay/AP Photo)

A group of over 250 women march through the center of Bujumbura, Burundi, calling for the release of protesters arrested during demonstrations, Sunday May 10, 2015. (Photo by Jerome Delay/AP Photo)

Delivery trucks drive through the Musaga district of Bujumbura, Burundi, Sunday May 10, 2015. (Photo by Jerome Delay/AP Photo)

A group of over 250 women march through the center of Bujumbura, Burundi, calling for the release of protesters arrested during demonstrations, Sunday May 10, 2015. At least 13 people have died and 216 have been wounded in protests since April 25, when the ruling party announced it had nominated President Pierre Nkurunziza as its presidential candidate. (Photo by Jerome Delay/AP Photo)

Police officers stand in the street after the barricades were cleared, in the district of Bujumbura, Burundi, Sunday May 10, 2015. (Photo by Jerome Delay/AP Photo)

Protesters march through the Musaga district of Bujumbura, in Burundi, Monday, May 11, 2015. (Photo by Jerome Delay/AP Photo)

Protesters march through the Musaga district of Bujumbura, in Burundi, Monday, May 11, 2015. (Photo by Jerome Delay/AP Photo)

A protester carries a tyre to be used to erect a barricade as they demonstrate against the ruling CNDD-FDD party's decision to allow Burundian President Pierre Nkurunziza to run for a third five-year term in office, in Bujumbura, May 7, 2015. (Photo by Jean Pierre Aime Harerimana/Reuters)

A riot policeman listens to the radio during protests in Burundi's capital Bujumbura, May 5, 2015. (Photo by Jean Pierre Aime Harerimana/Reuters)

Riot policemen detain a man during clashes with protesters against the ruling CNDD-FDD party's decision to allow Burundian President Pierre Nkurunziza to run for a third five-year term in office, in Bujumbura, May 4, 2015. (Photo by Jean Pierre Aime Harerimana/Reuters)

Riot policemen hold their positions as they clash with protesters demonstrating against the ruling CNDD-FDD party's decision to allow Burundi President Pierre Nkurunziza to run for a third five-year term in office, in Bujumbura, May 4, 2015. (Photo by Jean Pierre Aime Harerimana/Reuters)

A masked protestor smokes during a protest against President Pierre Nkurunziza's decision to run for a third term in Bujumbura, Burundi, May 11. 2015. (Photo by Goran Tomasevic/Reuters)

Soldiers stand near the body of a man who was burned alive by protesters in Burundi's capital Bujumbura, May 7, 2015. (Photo by Jean Pierre Aime Harerimana/Reuters)

A mob gestures near a female police officer accused of shooting a protester in Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

A protester gestures in front of policemen during a protest against President Pierre Nkurunziza's decision to run for a third term, in Bujumbura, Burundi, May 11, 2015. (Photo by Goran Tomasevic/Reuters)

A policeman tries to protect a female police officer accused of shooting a protester in the Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. Protesters opposed to the president's decision to run for a third term chased, beat and stoned the woman, who was later handed back to the police. (Photo by Goran Tomasevic/Reuters)

A policeman tries to protect a female police officer accused of shooting a protester in the Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

A female police officer accused of shooting a protester stands protected by fellow police officers in the Buterere neighbourhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

A mob gestures near a female police officer accused of shooting a protester in Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

A mob attacks a female police officer accused of shooting a protester in the Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

A mob attacks a female police officer accused of shooting a protester in the Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

A man tries to protect a female police officer accused of shooting a protester from other protesters in the Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

A mob attacks a female police officer accused of shooting a protester in the Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

A mob attacks a female police officer accused of shooting a protester in the Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

A mob attacks a female police officer accused of shooting a protester in the Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

A mob attacks a female police officer accused of shooting a protester in the Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

A mob attacks a female police officer accused of shooting a protester in the Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

A mob attacks a female police officer accused of shooting a protester in the Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

A mob attacks a female police officer accused of shooting a protester in Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

A mob drags a female police officer accused of shooting a protester in the Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

A mob carries a female police officer accused of shooting a protester in the Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)

Policeman escort a female police officer accused by protesters of shooting a protester in the Buterere neighborhood of Bujumbura, Burundi, May 12, 2015. (Photo by Goran Tomasevic/Reuters)