CRANDALL (CBSDFW.COM) – A Dallas County Constable was killed after a driver veered into oncoming traffic Saturday night, crashing into his pickup truck, a DPS spokesman said.

Texas Department of Public Safety spokesman Lonny Haschel said a 26-year-old driver was traveling south on FM 741 at 11 p.m. Saturday and “for unknown reasons” crossed into northbound traffic.

The driver, identified as Warren Ray Patton, 26, of Kaufman, drove his BMW into a 2001 Chevrolet truck at FM 741 at U.S. 175. Guy Mundy Farley, 40, was killed.

Farley was later identified as the constable. He died at the scene. Patton was taken to Parkland Memorial Hospital with life-threatening injuries, Haschel said.

Family members say Patton was unconscious at the scene but is awake and alert Sunday afternoon. Haschel said the accident report shows suspicion of intoxication.

Patton’s family says he got a tattoo before the crash and was buying formula and diapers for his twin girls from Walmart.

Neither vehicle had passengers inside, Haschel added.