He is said to have died Thursday night at the Nsawam prison where he was serving a 15-year jail term for trafficking narcotics.
Idrahim Sima is said to have passed away after suffering injuries from a football game.
Prior to his death, Sima had complained of a headache. He died at the Police Hospital after he had been rushed there.
The Exopa Chief Executive Officer was sentenced by an Accra Fast Track High Court in September 2011 for possessing and attempting to export 4.9 kilogrammes of cocaine concealed in four tubers of yam.