NAIROBI, Kenya (AP) _ A small twin-engine plane carrying European tourists crashed in a southeastern game park, killing all six passengers and their Kenyan pilot, authorities said today.

The 10-seat Cessna 404, which took off from the coastal city of Mombasa, crashed Sunday morning in Tsavo West National Park en route to the neighboring Amboseli Game Park, said Martin Knus, manager of Private Safaris Ltd., which organized the flight.

The cause of the crash was not immediately known.

Knus said the investigation would look into whether weather played a part in the accident. Forecasters said weather in the area was overcast but dry at the time of the accident.

The names of the victims were not immediately available. Knus tentatively gave the nationalities of the tourists as four Swiss and two Austrians.

Neither the Swiss nor the Austrian embassies had any information on the crash.

It came at a time when Kenya is trying to reassure visitors of the safety of its parks. Since July, gunmen in remote regions have attacked and killed one American tourist, a French couple and conservationist George Adamson.