Two parents lost their lives in an armed attack Five people killed in a home near Seattle He has been identified and prosecutors are considering possible charges against the 15-year-old boy suspected of carrying out the attack.

Two of the dead victims were identified as Mark and Sarah Humiston, according to an employer and multiple news outlets. Three of his children died in the attack. Authorities said the suspect and the victims, including an 11-year-old child injured in the shooting, are relatives.

Law enforcement responded to a home in Fall City, a leafy suburb about 25 miles outside Seattle, around 5 a.m. Monday after reports of multiple shootings. On arrival, they discovered five people dead, two adults and three teenagers. The King County Sheriff’s Office arrested a 15-year-old boy at the scene, and emergency personnel took an injured teenager to the hospital.

Sheriff’s office spokesman Mark Mellis said at a news conference Monday that the incident involved “domestic violence” and “domestic violence.”

The 11-year-old girl injured in the shooting has been released from Harborview Medical Center in Seattle, hospital spokeswoman Susan Gregg told USA TODAY on Wednesday.

Neighbor helped victims before law enforcement arrived

A neighbor with medical training was able to enter the home and provide aid before emergency responders arrived, authorities said. Responding deputies determined that the suspect was acting alone and there was no ongoing threat to the public.

“There was no serious confrontation with the detained young man,” Mellis said. “What’s done is done. It’s done.”

King County Councilwoman Sarah Perry said Monday that “five of seven family members were tragically killed” in the shooting.

“My heart aches for the lives lost and for everyone who is trying to make sense of this loss right now,” he said.

‘They were perfect’: Locals remember murdered parents

Mark Humiston worked as an electrical engineer at Seattle-based consulting firm Hargis Engineers, company spokesman Chris Sheldon said in an email to USA TODAY.

“We are blindsided and saddened by the tragic events that have led to the loss of a respected colleague, mentor and friend, as well as immediate family members,” the company said in a statement. “Mark’s leadership and vision were: He is an integral part of our company and will be greatly missed. Our thoughts are with his surviving family, friends and colleagues during this difficult time.”

Sheldon said Hargis Engineers complied with King County officials investigating the incident.

Sarah Humiston was previously licensed as a registered nurse, according to the report. Washington State Department of Health website. Public records show his driver’s license has expired.

A candlelight vigil for the Humistons and their children was held Tuesday at Fall City United Methodist Church. Rhea Robertson, a football coach who counseled one of the victims, remembered Mark and Sarah Humiston as wonderful parents.

“My father worked hard and my mother was the most dedicated, devoted mother you could ask for.” Robertson told KOMO News. “You thought they were perfect. They looked perfect to me from the outside.”

The young man appeared in juvenile court; pending expenses

When the teen made his first appearance in juvenile court Tuesday, a judge found probable cause for five counts of first-degree murder and one count of attempted murder. Associated Press reported. The teen remains in custody at a juvenile detention facility until a charging decision is made by the King County Prosecutor’s Office, which did not immediately respond to a request for comment Wednesday.

Authorities have not yet determined the cause of the incident. Sheriff’s spokeswoman Brandyn Hull previously said law enforcement initially received a report of a possible suicide, but the investigation turned into a homicide investigation.

Neither law enforcement nor the King County Medical Examiner’s Office released the names of the victims. It may take several days for examiners to obtain positive identification and notify next of kin, medical examiner’s office spokeswoman Kate Cole said Wednesday.

The unincorporated community of Fall City, located about 25 miles east of Seattle, is home to about 2,000 people, according to U.S. Census data. The area’s median home value is $1.1 million. According to realtor.comWell above the national average of $360,000.

Credit: Eric Lagatta and Jonathan Limehouse, USA TODAY

This article first appeared on USA TODAY: Parents killed in attack in Washington state; the reason sought