Teen arrested after 5 people found dead at home in Washington state

A 15-year-old was arrested Monday after five people were found dead in a home in Fall City, Washington, in an incident “perpetrated by firearm,” law enforcement officials said.

A 15-year-old was arrested Monday after five people were found dead in a home in Fall City, Washington, in an incident “perpetrated by firearm,” law enforcement officials said. Two adults and three of their children were found dead after deputies responded early Monday to 911 calls of a “disturbance with gunfire,” according to the King County Sheriff’s Office. The victims were Mark and Sarah Humiston and their three children, and the suspect is their 15-year-old son, CNN affiliate KING5 reported. Mark was an electrical engineer and Sarah used to be a registered nurse, KING5 reported. The children killed were “young teenagers,” Mike Mellis, a deputy and spokesperson for the sheriff’s office, said in a Monday news conference. Another child – a girl – was injured and taken to Harborview Medical Center in Seattle. She was in “satisfactory” condition on Tuesday, a hospital spokesperson told CNN. “It does appear to be that this is a family incident, clearly a domestic violence incident involves not only a young man who’s now in significant trouble, it involves firearms. Young men and firearms,” Mellis told reporters Monday.