US Army helicopters crash after Alaska training flight

It was not immediately clear how many people were on board or the extent of any injuries.

The AH-64 Apache helicopters were from Fort Wainwright, based near Fairbanks.

Officials said the incident was under investigation, and more details would be released when they become available.

Austin McDaniel, spokesman for the Alaska State Troopers, referred questions to the Army.

In February, two soldiers were injured when an Apache helicopter rolled after taking off from Talkeetna. The aircraft was one of four travelling to Joint Base Elmendorf-Richardson in Anchorage from Fort Wainwright.

Healy is located about 400 kilometres north of Anchorage.