US National Transportation Safety Board (NTSB) said Friday a private helicopter crashed in a lake on Alaska’s North Slope near Utqiagvik Thursday killing the pilot and three passengers, Geo. TV reported.
Authorities are investigating the cause of the crash and ascertaining where was it coming from.
The three people killed near were the employees of the Division of Geological and Geophysical Survey who were on their fieldwork and were returning after completing their task.
NTSB Alaska Chief Clint Johnson said that four people were onboard a Bell 206L-4 craft owned by Maritime Helicopters in Homer.
Johnson said the helicopter was returning to Utqiagvik from a mission, but it remains unclear where it was coming from.
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