Newly re-elected president of Chad, Idriss Deby is dead.

The country’s military announced this on Tuesday.

Deby, who was reported Monday to have won a sixth term, died while on the frontline during a battle against rebels who were advancing on the country’s capital, Ndjamena, Al Jazeera reports.

Deby, 68, “has just breathed his last defending the sovereign nation on the battlefield” over the weekend, army spokesman General Azem Bermandoa Agouna said in a statement read out on state television.

The army said Deby had been commanding his army at the weekend as it battled against rebels who had launched a major incursion into the north of the country on election day.

The army said a military council led by the late president’s 37-year-old son Mahamat Idriss Deby Itno, a four-star general, would replace him.

The announcement came a day after Deby, who came to power in a rebellion in 1990, won a sixth term, as per provisional results released on Monday. Deby took 79.3 percent of the vote in the April 11 presidential election, the results showed.

Al Jazeera further reports that Deby postponed his victory speech to supporters and instead went to visit Chadian soldiers battling rebels, according to his campaign manager.