An 18-year-old Unity man sustained life-threatening injuries in an ATV crash in Brooks on Monday, police said.

Zach Turner was taken by LifeFlight helicopter to Eastern Maine Medical Center in Bangor, Maine Department of Public Safety spokesperson Shannon Moss said in a statement.

Turner was a passenger on an ATV being operated by a 17-year-old boy from Monroe, Moss said.

The ATV was being operated on Kenney Road in Brooks around 5:22 p.m. Monday when it crashed and rolled over several times, she said.

The name of the ATV operator is not being released because he is a juvenile. He was transported to Waldo County General Hospital for minor injuries.

Moss said that speed and alcohol are believed to have been contributing factors in the crash.

The Maine State Police, Maine Forest Service, Maine Warden Service, and Brooks Fire and Ambulance responded to the scene.

The crash remains under investigation by the Maine State Police Central Field Troop and a crash reconstructionist with the State Police Traffic Safety Unit.

Because of incorrect information provided to the Press Herald, this story was updated at 1:05 p.m. Wednesday to correct the victim’s name. Zach Turner was injured in the crash.