Former prisoners board a truck after being released during the launch of a mass presidential pardon of over 5000 inmates at the Mpimba Central Prison, as part of efforts to decongest prisons, in Bujumbura, Burundi April 26, 2021. REUTERS/Evrard Ngendakumana

Prisoners dance during the launch of a mass presidential pardon of over 5000 inmates at the Mpimba Central Prison, as part of efforts to decongest prisons, in Bujumbura, Burundi April 26, 2021. REUTERS/Evrard Ngendakumana TPX IMAGES OF THE DAY

Former prisoners board a truck after being released during the launch of a mass presidential pardon of over 5000 inmates at the Mpimba Central Prison, as part of efforts to decongest prisons, in Bujumbura, Burundi April 26, 2021. REUTERS/Evrard Ngendakumana

Former prisoners wait to board a trucks after being released during the launch of a mass presidential pardon of over 5000 inmates at the Mpimba Central Prison, as part of efforts to decongest prisons, in Bujumbura, Burundi April 26, 2021. REUTERS/Evrard Ngendakumana

Burundian Justice Minister Jeanine Nibizi addresses prisoners during the launch of a mass presidential pardon of over 5000 inmates at the Mpimba Central Prison, as part of efforts to decongest prisons, in Bujumbura, Burundi April 26, 2021. REUTERS/Evrard Ngendakumana

Burundi's President Evariste Ndayishimiye arrives for the launch of a mass presidential pardon of over 5000 inmates at the Mpimba Central Prison, as part of efforts to decongest prisons, in Bujumbura, Burundi April 26, 2021. REUTERS/Evrard Ngendakumana

Prisoners Habimana Youssouf (L) Ndayishimiye Diane (C) and Bizoza Dieudonne (R) follow proceedings during the launch of a mass presidential pardon of over 5000 inmates at the Mpimba Central Prison, as part of efforts to decongest prisons, in Bujumbura, Burundi April 26, 2021. REUTERS/Evrard Ngendakumana

Prisoners react during the launch of a mass presidential pardon of over 5000 inmates at the Mpimba Central Prison, as part of efforts to decongest prisons, in Bujumbura, Burundi April 26, 2021. REUTERS/Evrard Ngendakumana

A prisoner reacts during the launch of a mass presidential pardon of over 5000 inmates at the Mpimba Central Prison as part of efforts to decongest prisons in Bujumbura, Burundi April 26, 2021. REUTERS/Evrard Ngendakumana

Prisoner Ndayishimiye Diane follows proceedings during the launch of a mass presidential pardon of over 5000 inmates at the Mpimba Central Prison, as part of efforts to decongest prisons, in Bujumbura, Burundi April 26, 2021. REUTERS/Evrard Ngendakumana

A prisoner reacts during the launch of a mass presidential pardon for over 5000 inmates at the Mpimba Central Prison, as part of efforts to decongest prisons, in Bujumbura, Burundi April 26, 2021. REUTERS/Evrard Ngendakumana

Chairman of Truth and Reconciliation Commission Pierre Claver Ndayicariye addresses delegates near a 1972 mass grave as they prepare to extract bodies in Gikuzi village, Vugizo commune in Makamba Province, Burundi September 15, 2020. Picture taken September 15, 2020. REUTERS/Clovis Guy Siboniyo

A banner hangs to identify the site of a 1972 mass grave in the Gikuzi village, Vugizo commune in Makamba Province, Burundi September 15, 2020. Picture taken September 15, 2020. REUTERS/Clovis Guy Siboniyo

Chairman of Truth and Reconciliation Commission Pierre Claver Ndayicariye addresses delegates near a 1972 mass grave as they prepare to extract bodies in Gikuzi village, Vugizo commune in Makamba Province, Burundi September 15, 2020. Picture taken September 15, 2020. REUTERS/Clovis Guy Siboniyo

Estajoni Hamenyimana whose father is suspected to have been killed and buried in a mass grave in 1972, talks during a Reuters interview in Gikuzi village, Vugizo commune in Makamba Province, Burundi September 15, 2020. Picture taken September 15, 2020. REUTERS/Clovis Guy Siboniyo

Workers from the Truth and Reconciliation Commission dig to extract bodies from a 1972 mass grave in the Gikuzi village, Vugizo commune in Makamba Province, Burundi September 15, 2020. Picture taken September 15, 2020. REUTERS/Clovis Guy Siboniyo

Remains of an unidentified person are seen at a 1972 mass grave as workers from the Truth and Reconciliation Commission dig to extract bodies in the Gikuzi village, Vugizo commune in Makamba Province, Burundi September 15, 2020. Picture taken September 15, 2020. REUTERS/Clovis Guy Siboniyo

Remains of an unidentified person are seen at a 1972 mass grave as workers from the Truth and Reconciliation Commission dig to extract bodies in the Gikuzi village, Vugizo commune in Makamba Province, Burundi September 15, 2020. Picture taken September 15, 2020. REUTERS/Clovis Guy Siboniyo

Denise Bucumi Nkurunziza, widow to late former Burundian President Pierre Nkurunziza, is escorted, during a state funeral procession in Gitega, Burundi June 26, 2020. REUTERS/Clovis Guy Siboniyo

Military officers escort a gun carriage carrying the casket of late former Burundian President Pierre Nkurunziza, draped in the national flag, during a state funeral procession, amid the growing threat of the coronavirus in Gitega, Burundi June 26, 2020. REUTERS/Clovis Guy Siboniyo

Military officers escort a gun carriage carrying the casket of late former Burundian President Pierre Nkurunziza, draped in the national flag, during a state funeral procession amid the growing threat of the coronavirus in Gitega, Burundi June 26, 2020. REUTERS/Clovis Guy Siboniyo

Military officers escort the casket of late former Burundian President Pierre Nkurunziza, draped in the national flag, during a state funeral procession amid the growing threat of the coronavirus in Gitega, Burundi June 26, 2020. REUTERS/Clovis Guy Siboniyo

Military officers escort the casket of late former Burundian President Pierre Nkurunziza, draped in the national flag, during a state funeral procession amid the growing threat of the coronavirus in Gitega, Burundi June 26, 2020. REUTERS/Clovis Guy Siboniyo

Supporters of Burundi's President elect Evariste Ndayishimiye cheer as they attend his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Former Tanzania's President Jakaya Kikwete talks to the President of the National Assembly Pascal Nyabenda as they attend the inauguration ceremony of Burundi's President elect Evariste Ndayishimiye following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Former Egyptian General Sedki Sobhy attends the inauguration ceremony of Burundi's President elect Evariste Ndayishimiye following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Senior military officers salute as they attend the inauguration ceremony of Burundi's President elect Evariste Ndayishimiye following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Former Tanzania's President Jakaya Kikwete and Tanzania's Vice President Samia Suluhu Hassan attend the inauguration ceremony of Burundi's President elect Evariste Ndayishimiye following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Burundi's President elect Evariste Ndayishimiye and his wife his wife Angeline Ndayubaha arrive for his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Burundi's President elect Evariste Ndayishimiye and his wife his wife Angeline Ndayubaha arrive for his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Burundi's President elect Evariste Ndayishimiye and his wife his wife Angeline Ndayubaha attend his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

A Red Cross worker stands among supporters of Burundi's President elect Evariste Ndayishimiye as they attend his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Burundi's President elect Evariste Ndayishimiye attends his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Supporters of Burundi's President elect Evariste Ndayishimiye attend his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana TPX IMAGES OF THE DAY

Supporters of Burundi's President elect Evariste Ndayishimiye cheer as they attend his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Burundi's President elect Evariste Ndayishimiye attends his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Burundi's President elect Evariste Ndayishimiye attends his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Burundi's President elect Evariste Ndayishimiye attends his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Burundi's President elect Evariste Ndayishimiye takes oath of office during his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Burundi's President elect Evariste Ndayishimiye takes oath of office during his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Burundi's President elect Evariste Ndayishimiye attends his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Burundi's President elect Evariste Ndayishimiye takes oath of office during his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Burundi's President elect Evariste Ndayishimiye receives prayers from religious leaders during his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Burundi's President elect Evariste Ndayishimiye receives prayers from religious leaders during his inauguration ceremony following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Supporters gather for the inauguration ceremony of Burundi's President elect Evariste Ndayishimiye following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

Supporters gather for the inauguration ceremony of Burundi's President elect Evariste Ndayishimiye following the sudden death of his predecessor Pierre Nkurunziza, amid the growing threat of the coronavirus disease (COVID-19), at the Ingoma stadium in Gitega, Burundi June 18, 2020. REUTERS/Evrard Ngendakumana

The national flag flies half-mast outside the State House building following the death of Burundi's President Pierre Nkurunziza in Bujumbura, Burundi June 10, 2020. REUTERS/Evrard Ngendakumana

Burundian religious leaders pay homage following the death of Burundi's President Pierre Nkurunziza, at the State House in Bujumbura, Burundi June 10, 2020. REUTERS/Evrard Ngendakumana

Burundian Minister of Finance Domitien Ndihokubwayo signs the condolences book following the death of Burundi's President Pierre Nkurunziza, at the State House in Bujumbura, Burundi June 10, 2020. REUTERS/Evrard Ngendakumana

President of the National Assembly Pascal Nyabenda signs the condolences book following the death of Burundi's President Pierre Nkurunziza, at the State House in Bujumbura, Burundi June 10, 2020. REUTERS/Evrard Ngendakumana

President of the National Assembly Pascal Nyabenda signs the condolences book following the death of Burundi's President Pierre Nkurunziza, at the State House in Bujumbura, Burundi June 10, 2020. REUTERS/Evrard Ngendakumana

Marie Ndabigeze, wife to the President of the National Assembly Pascal Nyabenda reacts following the death of Burundi's President Pierre Nkurunziza, at the State House in Bujumbura, Burundi June 10, 2020. REUTERS/Evrard Ngendakumana

Diplomats stand in line to sign the condolences book following the death of Burundi's President Pierre Nkurunziza, at the State House in Bujumbura, Burundi June 10, 2020. REUTERS/Evrard Ngendakumana

The Burundian national flag flies at half mast outside the State House building following the death of Burundi's President Pierre Nkurunziza, in Bujumbura, Burundi June 10, 2020. REUTERS/Evrard Ngendakumana

A portrait photo, a bottle of hand sanitiser and a condolences book are seen displayed at the State House following the death of Burundi's President Pierre Nkurunziza, in Bujumbura, Burundi June 10, 2020. REUTERS/Evrard Ngendakumana

Ambassador of the Federal Republic of Russia to Burundi Valery Mikhaylov signs the condolences book as other diplomats stand in line following the death of Burundi's President Pierre Nkurunziza, at the State House in Bujumbura, Burundi June 10, 2020. REUTERS/Evrard Ngendakumana

Ambassador of the Federal Republic of Russia to Burundi Valery Mikhaylov signs the condolences book following the death of Burundi's President Pierre Nkurunziza, at the State House in Bujumbura, Burundi June 10, 2020. REUTERS/Evrard Ngendakumana

Former Burundi's Prime Minister Anatole Kanyenkiko signs in the condolences book following the death of Burundi's President Pierre Nkurunziza, at the State House in Bujumbura, Burundi June 10, 2020. REUTERS/Evrard Ngendakumana

Ambassador of the Federal Republic of Russia to Burundi Valery Mikhaylov signs the condolences book following the death of Burundi's President Pierre Nkurunziza, at the State House in Bujumbura, Burundi June 10, 2020. REUTERS/Evrard Ngendakumana

Kenya's Ambassador to Burundi Ken Vitisia signs in the condolences book following the death of Burundi's President Pierre Nkurunziza at the State House in Bujumbura, Burundi June 10, 2020. REUTERS/Evrard Ngendakumana