The man who allegedly shot and killed a USPS truck driver in Dallas, Texas, has been arrested after two men who were with him during the shooting turned him in to authorities.

The suspect, 25-year-old Donnie Ferrell, of Hutchins, Texas, was arrested on Wednesday, February 21st, by the Dallas Police Department.

According to police reports, Ferrell was drinking with several friends at a pool hall before leaving together in a Mazda SUV early Monday morning.

The SUV was reportedly swerving on the roadway, driving erratically around a USPS truck on Interstate 30.

As the SUV attempted to pass the truck, Ferrell reportedly opened fire from the front passenger seat, shooting and killing the truck driver, 58-year-old Tony Mosby. Mosby was pronounced dead at the scene by the time paramedics arrived.

Ferrell and the rest of the men in the SUV then left the scene.

On Tuesday, the USPS offered a $50,000 reward for information that led to the arrest of the shooter.

Later that day, two men who were in the SUV at the time of the shooting contacted authorities and explained what happened. The men explained that Ferrell became “enraged” by a hand gesture made by the truck driver shortly before the shooting occurred. The men also presented video evidence to the FBI to back up their claims.

On Wednesday night, Dallas police arrested Ferrell at his home in Hutchins, Texas.

Ferrell is currently behind held without bail and has been charged with one count of murder of an officer or employee of the United States. He faces up to life in prison if convicted.