A small passenger plane en route to Kenya’s famed Maasai Mara National Park crashed early Tuesday, killing all 11 people on board, including foreign tourists, officials confirmed.

The Mombasa Air Safari aircraft was flying from the coastal resort town of Diani to the Kichwa Tembo airstrip when it went down around 5:30 a.m. local time (0230 GMT).

Mombasa Air Safari chairman John Cleave said the dead included eight Hungarian nationals, two Germans, and the Kenyan pilot. “Sadly, there are no survivors,” he said in a statement. “We have activated our emergency response team and are cooperating fully with local authorities. Our hearts and prayers are with all those affected by this tragic event.”

Initial reports from the Kenya Civil Aviation Authority (KCAA) suggested that 12 people might have been on board, but later confirmations from the airline placed the number at 11.

Emergency response teams from the Kenya Wildlife Service, police, and aviation authorities were deployed to the crash site, which lies near the border of the Maasai Mara National Reserve, a popular safari destination known for its annual wildebeest migration.

The cause of the crash remains under investigation. The KCAA said its inspectors and other government agencies were already on site to assess the wreckage and determine what led to the fatal accident.

The Maasai Mara, one of Africa’s most visited wildlife reserves, attracts thousands of international tourists each year.