Three Swiss nationals died in a plane crash in Kenya's mountainous Aberdare National Park, Kenya's government spokesman said on Saturday. The small aircraft, carrying its pilot and two passengers, went missing on Thursday. A rescue helicopter spotted the bodies and wreckage Saturday afternoon after a two-day search. The plane was headed to Nairobi from an airstrip in the country's northern Rift Valley. The cause of the crash was not yet clear. Recovery teams had to leave the area as darkness fell, government spokesman Muthui Kariuki told dpa.