Four Coast Guard crew members suffered minor injuries when an MH-60 Jayhawk helicopter crashed during a training flight near Sitka in southeast Alaska.

The aircraft went down in a remote area near Harbor Mountain, and rescuers reached the scene about an hour later.

All four crew members were taken to Mt. Edgecumbe Medical Center and are expected to recover.

The Coast Guard has launched an investigation, though the cause of the crash is still unknown, the AP has reported.

The incident comes amid a series of recent aviation accidents across the United States.