Four men are dead after a helicopter they were onboard after helping fight a wildfire crashed near Las Vegas, New Mexico.

The Bernalillo County Sheriff's Office confirmed the tragedy on social media early Sunday morning, announcing that the crash involved one of their Metro 2 aircraft around 7:20 p.m. the previous evening.

BCSO went on to say that "there are no known survivors," and that three of their employees and one fire department official were onboard.

The office later confirmed the names and job titles of the deceased: Undersheriff Larry Koren, Lieutenant Fred Beers, Deputy Michael Levison and Rescue Specialist Matthew King.

"These personnel were headed back to Albuquerque after assisting fire crews with the East Mesa Fire," the sheriff's office said in their initial post.