A manhunt is underway in Tennessee after a sheriffs deputy was fatally shot and a second deputy was wounded during a traffic stop Thursday night.

Blount County sheriffs deputies Greg McCowan, 43, and Shelby Eggers, 22, were shot after a driver refused to get out of his vehicle during the stop just before 8:30 p.m. in Maryville, just south of Knoxville, the Tennessee Bureau of Investigation said.

Kenneth DeHart, 42, has been identified as the suspect in the shooting. Authorities said he faces charges of first-degree murder, attempted first-degree murder and being felon in possession of a firearm.