A state funeral for Chad President Idriss Déby Itno will take place on Friday, military officials announced on Tuesday.

It will be held in the capital N’Djamena. Déby will be buried in his native region in the east of Chad.

The military council that took over after Déby’s death said the funeral will take place “in the presence of heads of state and government of friendly countries”.

Déby, 68, died of wounds sustained on the frontline during fighting against rebels in the country’s north-west.

The news of his death came a day after Déby, who came to power in a rebellion in 1990 and was one of Africa’s longest-ruling leaders, won a sixth term, as per provisional results released on Monday. Déby took 79.3% of the vote in the April 11 presidential election, according to the Chadian national electoral commission.

Deby’s son, the four-star General Mahamat Kaka, otherwise known as Mahamat Idriss Déby Itno, will be the  interim head of state.

The 37-year-old will head an 18-month transitional council made up of military officers, Azem Bermendao Agouna, an army spokesman, said in a television broadcast. “Free and transparent” elections will be held when the transitional period is over.

Nigeria President Muhammadu Buhari said in a statement released on Tuesday that he was “deeply shocked and devastated” by the sudden death of Déby, whom he described as “a friend of Nigeria”.

African Union Moussa Faki Mahamat, a former Chadian prime minister, tweeted that he was saddened by Déby’s death and sent his condolences to his family.

“It is with great dismay and deep emotion that I learnt of the death today of President Idriss Déby Itno,” said Faki, who was Chad’s prime minister from 2003 to 2005 and his foreign minister from 2008 – 2017.

He called Déby a “great statesman and recognised military leader.”.

Messages of condolences poured in from around the world, including from France, the United States, the European Union, the United Nations, Mali, Niger, Senegal and Israel.