A small plane crashed in Kenya’s coastal region of Kwale early Tuesday while en route to Maasai Mara National Reserve, with 12 people feared dead.

Axar.az informs, citing AP, the crash happened in a hilly and forested area about 40 kilometers (25 miles) from Diani airstrip, authorities said. Kwale County Commissioner Stephen Orinde told The Associated Press that the passengers were “all foreign tourists” and their nationalities would be confirmed later.

The Kenya Civil Aviation Authority said that 12 people were onboard the Cessna Caravan-type aircraft, and authorities were investigating the cause of the crash.

The aircraft crashed minutes after takeoff and burst into flames leaving a charred wreckage at the scene, officials said.