HAMBLEN TWP. — A Nashville man was injured in an ATV accident last night.

Jacob Riggen, 24, of Nashville, was riding his 2015 Can-Am 450 on a friend’s private property in the 4000 block of Vaught Road.

His friend was riding ahead of him when he stopped and realized Riggen wasn’t behind anymore. After waiting for him to show up, the friend turned around and found Riggen unconscious next to his ATV, said Angela Goldman, public information officer for Indiana Department of Natural Resources COs.

“He has no recollection of what happened,” she said.

Conservation officers are unable to determine the cause of the crash, Goldman said.

“We know that somehow he lost control of his four-wheeler and was ejected and lost consciousness. That’s all we know,” she said.

Riggen was not wearing a helmet or any protective gear. He received a concussion and was unconscious “for a small time,” Goldman said.

He was transferred by ambulance to Johnson Memorial Hospital for treatment and was later released, she said.