A Monroe County Sheriff's Office deputy has been killed in a wreck on U.S. 1.

Deputy Nick Pham, 38, of Homestead, was pronounced dead at the scene.

He is survived by his wife, Jackey, and a 13-year-old son.

He was driving an unmarked Dodge Charger on U.S. 1 when he collided with an 18-wheel tractor-trailer that apparently T-boned him on the driver side just north of the Tom's Harbor Bridge at Mile Marker 62 at about 12:20 p.m.

The Sheriff's Office recently bought three Dodge Chargers, using a $200,000 Florida Department of Transportation grant, to enforce school-related traffic, specifically targeting aggressive drivers.

Pham, who previously worked for the Florida City Police Department and Dade Correctional Institution, is the sixth deputy to be killed in the line of duty, and the fourth to be killed in a traffic wreck in the last 20 years.

It was around this time last year that Deputy Robin Tanner was killed in a wreck on U.S. 1 in Marathon. Tanner swerved off U.S. 1 and collided with a building, Marathon Cleaners, as she was responding to a medical emergency on Dec. 13.