The affluent lakefront neighborhood was rocked after a family was butchered in their Washington home

A 15-year-old Washington state the boy, accused of killing his parents and three of his siblings, allegedly tried to stage the scene as a murder-suicide by his younger brother.

The suspect’s 11-year-old sister survived Monday’s attack by playing dead and told police what actually happened, according to court records, the Associated Press reported. New details were released Thursday about the massacre at the Humiston family home on Lake Alice in Fall City, east of Seattle.

The girl told police that her 15-year-old brother used their father’s gun and that her brother was the only one of her siblings who knew the code to the lock box where their father’s gun was kept.

Her brother had recently been in trouble for failing tests at school, she told police.

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The King County Medical Examiner’s Office identified the victims as Mark Humiston, 43; Sarah Humiston, 42; and their children, Benjamin, 13; Joshua, 9; and Katheryn, 7, the Associated Press reported. Authorities have not released the suspect’s name.

The suspect called 911 around 5 a.m. Monday to report that his 13-year-old brother had butchered their family after getting in trouble for viewing pornography, according to a probable cause affidavit. reported the Associated Press.

A neighbor then called 911 after the surviving girl escaped and shared what happened. The police learned that a neighbor with medical experience was giving aid to the injured girl, who was shot twice, escaped and ran to the neighbors for help.

She was taken to Harborview Medical Center and released from the hospital Tuesday evening, a hospital spokesman said. The Seattle Times.

When deputies arrived at the home Monday, they found a “chaotic scene” but immediately took a male teenager into custody, King County Sheriff’s Deputy Mike Mellis said at a news conference.

When deputies entered the home, they discovered five people dead: the bodies of two adults and three children. Once the bodies were discovered, the deputies understood that it was a “significant crime scene” Mellis said.

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The suspect was charged Thursday with five counts of first-degree murder and one count of attempted first-degree murder with a firearm, all counts of domestic violence, the King County Prosecutor’s Office said. He is being held at the Clark Juvenile and Family Justice Center.

The case was originally filed in juvenile court based on the suspect’s age, but prosecutors said they are requesting a hearing with a judge to determine whether the case will be moved to adult court.

The suspect’s lawyers said in court that he has no criminal record, according to The Associated Press.

The judge also ordered the teenager to have no contact with his surviving sister.

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“I saw the kids in the driveway just yesterday afternoon,” neighbor Lynne Trowern Fox 13 said. “I’m shocked. I kept breaking down in tears.”

Neighbors said the five children could be seen swimming, fishing and boating from the waterfront at their lakefront home all summer long.

“So polite. Homeschooled. It’s unbelievable what happened,” said one former neighbor.

“Dad worked so hard and Mom was the most dedicated and loyal mother you could ask for,” said Rhea Robertson, a soccer coach who mentored one of the victims. KOMO News. “You thought they were perfect. From the outside, they looked perfect to me.”

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“It appears to be a family incident, a domestic violence incident involving a young man who is in significant trouble and involving firearms,” ​​Mellis said.