A gunman killed 3 and injured a fourth person in a suburban Seattle home where young people had gathered, police said. The shooting happened in the Chennault neighborhood of Mukilteo, a town of about 20,000 people, 25 miles north of Seattle.

The suspect was pulled over and arrested three counties away, Officer Myron Travis of the Mukilteo Police Department said.

About 15-20 people were in the home at the time of the shooting, and all have been interviewed by police, he said.