A military plane has crashed in central Angola, killing at least 30 people, including three Angolan army generals.

Portuguese-language news outlets say the plane crashed Wednesday while trying to take off from the airport in the central city of Huambo.

The Angolan Air Force jet, built by Brazilian aircraft-maker Embraer, was carrying a delegation of high-ranking Angolan military officers.

At least six people survived the crash. The cause of the crash is unknown.