President Idriss Deby Itno, who has been in power since 1990, will be inaugurated on Monday for a fresh term at a ceremony in N’djamena, Chad.
He won an election in April.
President Muhammadu Buhari of Nigeria will join other Heads of State and Government for the ceremony.
President Buhari will be accompanied on the one-day trip by Governor Abdullahi Ganduje of Kano State and Governor Kashim Shettima of Borno State.
The President’s delegation will also include Sen. Baba Kaka Garba, Mohammed Tahir Monguno, Minister of Foreign Affairs, Geoffrey Onyeama and the National Security Adviser, Major General Babagana Monguno (rtd).
The President will return to Abuja after the inauguration.
Deby became president of Chad after toppling the regime of Hissene Habre in December 1990.
He heads the Patriotic Salvation Movement and had survived various rebellions against his own rule.
He won elections in 1996 and 2001, and after term limits were eliminated he won again in 2006, 2011, and 2016.
He added “Itno” to his surname in January 2006. He is a graduate of Muammar Gaddafi’s World Revolutionary Centre.
Despite protests against his rule, he was able to win 61.56% of the votes cast in the 10 April election, to win a fifth term in office.