HOUSTON — A sheriff’s deputy in uniform was fatally shot multiple times from behind while filling up his patrol car at a suburban Houston gas station and a manhunt for the suspect continued Saturday morning, according to authorities.

Deputy Darren Goforth, 47, was pumping gas into his vehicle about 8:30 p.m. Friday when a man approached him from behind and fired multiple shots, Harris County Sheriff’s Office spokesman Ryan Sullivan told The Associated Press. Once the deputy fell to the ground, the suspect fired more shots.

No motive was determined for the shooting. Harris County Sheriff Ron Hickman said Goforth, who was a 10-year veteran of the force, had a wife and two children.

“In my 45 years in law enforcement, I can’t recall another incident so cold-blooded and cowardly,” Hickman said.

Sheriff’s office spokesman Deputy Thomas Gilliland said Goforth had traveled to the Chevron station where the shooting happened, after earlier responding to a routine car accident.

“He was pumping gas into his vehicle and the male suspect came up behind him and shot the deputy multiple times,” Gilliland told the Houston Chronicle. “The deputy fell to ground. The suspect came over and shot the deputy again multiple times as he lay on the ground.”

He said Goforth died at the scene. Detectives were checking security camera video for possible clues.

Bob Goerlitz, president of the Harris County Deputies Organization, said the incident was “shocking.”