A driver was shot and killed by an East Tennessee police officer who had jumped into the bed of the man's pickup truck as he attempted to flee a DUI stop, authorities said.

Tennessee Bureau of Investigation spokeswoman Susan Niland told news outlets that 30-year-old Joshua Grubb, of Lebanon, was fatally shot early Sunday in Lenoir City.

Niland said the unidentified officer was attempting to arrest Grubb's passenger for public intoxication, when Grubb tried to drive away.

The officer jumped into the bed of the fleeing truck, ordered Grubb to stop and, when Grubb refused, the officer shot him, Niland said.

The officer sustained minor injuries and has been placed on paid administrative leave while TBI agents continue to investigate the shooting.