Officials are still investigating what caused a small commuter plane to crash out of the sky over Alaska last week, killing all 10 people aboard — but Joel Natwick, a longtime pilot in the state, thinks ice could be to blame.

Authorities are working to recover the wreckage of a plane crash in western Alaska that killed 10 people while investigators are trying to determine what caused the small commuter aircraft to go down in the icy Bering Sea.

The 10 Alaskans killed in the crash near Nome include a mentor to new teachers, a school counselor and two Alaska Native Tribal Health Consortium employees traveling to service a local water plant.