MANSFIELD –  A 22-year-old Mansfield man was killed by a grizzly bear in an Alaska state park Sunday while on a moose hunting trip, the National Park Service reported Thursday.

Mansfield police attempted to notify family on Tuesday that Austin Pfeiffer, of Mansfield, had died, according to a report at the Mansfield Police Department. An Alaska state trooper called MPD to have an officer contact Austin’s wife, Ryleigh Pfeiffer, regarding a wildlife encounter while hunting in Alaska, according to information the News Journal obtained.

Pfeiffer’s family declined comment Wednesday.

An investigation determined that it was a surprise attack and that a defensive firearm or other deterrents, such as bear spray, was not readily available to the victim.