A Florida sheriff says his deputy was seconds away from being crushed by a pickup truck when he opened fire on the driver during a traffic stop.

During a news conference on Tuesday, Clay County Sheriff Rick Beseler said Lt. Shawn Gordon jumped onto the truck as it backed toward him at a "high rate of speed" during a Sunday night traffic stop. Driver Timothy Van Griffin remains in critical condition.

The Florida Department of Law Enforcement is investigating. Beasler says his office will also do an internal investigation.

The Florida Times-Union (http://bit.ly/1TJyfoS ) reports the truck sped toward Gordon as he was walking toward the truck after checking 33-year-old Griffin's driver's license. Gordon fired his gun several times. The truck struck the patrol car and pushed it backward.

The races of the deputy and the driver weren't immediately available.

___

Information from: The (Jacksonville) Florida Times-Union, http://www.jacksonville.com