A Washington man with a shotgun killed three people last June after becoming “enraged” by a video game, according to the federal government.

Clifton Frank Peter, 37, of Parker, pleaded guilty to three counts of second degree murder last week as part of a plea deal, according to a press release from the US District Attorney’s Office for the Eastern District from Washington.

Peter became angry with an unspecified video game, which caused him to attack his mother and leave her in a truck, according to the press release and the plea agreement.

As Peter backs up from the driveway into the street, he is accused of hitting another vehicle traveling on the road. He got out of the car and shot the driver with his shotgun, court records said.

Then he continued to drive. After pulling behind a slow-driving 2003 Honda, Peter backed up the vehicle and pushed the car to the side of the road, court documents show.

He then got out of his vehicle and shot the driver and passenger inside the Honda, court records said.

All three victims died.

Peter walked down the street after the shooting and was later arrested by police, his plea agreement declared.

He is due to be sentenced on December 1 and faces a maximum sentence of life in prison.

Peter’s public defenders did not immediately respond to a McClatchy News request for comment on Friday.

The town of Parker is located on the Yakama Indian Reservation, southwest of Washington, over an hour northwest of Kennewick.

A person is guilty of second degree murder in Washington if the murder was committed with intent but without premeditation. – The Charlotte Observer / Tribune News Service