The Mali former prime minister Soumeylou Boubeye Maiga, who was arrested last year on corruption allegations, died from an undisclosed illness in hospital.
The 68-year-old was detained in August over his alleged role in the purchase of a presidential jet during the rule of ex-president Ibrahim Boubacar Keita, who was ousted in a military coup a year earlier.
According to one of his lawyers, he died on March 21.
He was charged with multiple counts of graft and was awaiting trial.
His lawyers maintained that he was innocent.
One of his lawyers told Reuters he died at a clinic in the capital Bamako on Monday morning, where he had been hospitalised on medical parole since December.
His family and doctors had unsuccessfully pushed for Maiga to be allowed to travel abroad for treatment as his health deteriorated in Bamako’s main prison. However, relatives said authorities did not reply to their evacuation requests.
A former defence minister, Maiga was appointed prime minister in 2017 and resigned two years later, four weeks after a Fulani herder massacre by ethnic vigilantes shocked the West African nation.