A Mendham 19-year-old was killed Thursday night in an ATV accident in Montana, the Gallatin County Sheriff's Office said.

According to Montana News Now, sheriff department deputies said CPR and first aid was administered to Parker Regan, of Mendham, but he died from his injuries.

According to the office of Sheriff Brian Gootkin, the crash was reported on Andesite Road in the Yellowstone Club at Big Sky Thursday night at about 11:50 p.m.

Gallatin County Sheriff's office confirmed Regan was the passenger on the ATV and that the cause of the crash was under investigation. 

KBZK reported the Yellowstone Club Department of Public Safety, Gallatin County Sheriff's Office and Montana Highway Patrol responded to the scene.

A Parker Regan of Mendham posted a comment on an Alaskan fishing website last year about his travel experience.

"Alaska is a place with unpredictable weather, which makes it an unpredictable trip. Although, the experience gives you more excitement and knowledge every time. Even though my trip still has three more days left, this trip has been completely different than the last one but has affected me the same. I have been to different places in the world, even in Alaska. The Adventures here can never be repeated but only remembered."

According to its website, the Yellowstone Club is a private residential community, ski and golf resort in the northwest of Yellowstone National Park.

This is a developing story, and Patch will have more updates as they are available.