President Idris Deby of Chad has died from injuries sustained in a battle against extremists.
The Chadian army is currently combating rebel forces who have launched an assault on the capital, N’Djamena.
Deby, who was in power for 30 years, was reelected for a sixth term on April 11.
Deby was re-elected with 79.32 percent of the votes cast, according to provisional results from the electoral commission.
Former prime minister Albert Pahimi Padacke came in second with just 10.32 percent in the presidential vote, while turnout was 64.81 percent, Independent National Electoral Commission chairman Kodi Mahamat Bam said.
The first female president candidate in Chad’s history, Lydie Beassemda, came third with 3.16 percent.
The provisional results still need to be approved by the Supreme Court after it studies potential legal appeals.
After more than three decades in power, the victory of 68-year-old Deby was never in serious doubt after a campaign in which he faced a divided opposition lacking a major rival candidate and demonstrations were banned or dispersed.
Officially nine candidates were running against Deby, but three withdrew and called for the vote to be boycotted — though the Supreme Court kept their names on the ballots.
Deby campaigned on a promise of peace and security in a region that has been rocked by jihadist insurgencies.
Chad’s army said Monday it had killed more than 300 rebels following a heavily armed group’s incursion in the country’s north after election day.