Ghana's Defence and Environment ministers were killed in a helicopter crash Wednesday, the Ghanaian presidency said, hours after the armed forces reported a chopper carrying three crew and five passengers dropped off the radar.

Edward Omane Boamah became President John Mahama's Defence Minister earlier this year, shortly after Mahama's swearing-in in January.

Ibrahim Murtala Muhammed was serving as the Minister of Environment, Science, and Technology.

Everyone on board was killed in the accident, authorities said. "The president and government extend our condolences and sympathies to the families of our comrades and the servicemen who died in service to the country," said Mahama's chief of staff Julius Debrah.