SEATTLE (AP) — A 15-year-old boy accused of killing his parents and three of his siblings this week east of Seattle tried to frame his younger brother’s murder, but a sister who survived after it was she escaped dead to a neighbor’s house. and told the cops who actually did shootingauthorities said in a court document made public Thursday.

The boy was charged in juvenile court Thursday with five counts of aggravated murder. Under Washington state law, a hearing is required before the case can be moved to adult court.

The 11-year-old sister, who survived Monday’s shooting, told investigators the defendant had been in trouble recently for failing tests at school and that the handgun he used belonged to their father . Of all the children, she said, he was the only one who knew the code to the lock box their father kept him in.

The King County Medical Examiner’s Office identified the victims as Sarah Humiston, 42, Mark Humiston, 43, and their children Katheryn Humiston, 7, Joshua Humiston, 9, and Benjamin Humiston, 13.

According to a probable cause affidavit by King County Sheriff’s Detective Aaron Thompson, the defendant called 911 around 5 a.m. Monday to report that his 13-year-old brother had shot and killed their family at their home in Fall City as he came into town. problems to look at pornography.

Minutes later, a neighbor called 911 to say the injured 11-year-old had come home to report that her family had been shot by her 15-year-old brother and that she had played dead before escaping, it was reported. shows in the affidavit.

Arriving deputies detained the 15-year-old in the driveway and found the bodies inside. The 11-year-old was treated at a Seattle hospital and has since been released, a hospital spokesman said.

The 15-year-old waived the right to appear in court on Tuesday, according to the King County Prosecutor’s Office. His lawyers told the court that he has no criminal record. His attorneys did not immediately respond to a message seeking comment on the charges Thursday.

The teenager is scheduled to appear in court Friday afternoon.

Mark Humiston worked as an electrical engineer at Hargis Engineers in Seattle.

“We are blindsided and saddened by the tragic events that have resulted in the loss of a respected colleague, mentor and friend, as well as close family members,” the company said in a statement Thursday. “Mark’s leadership and vision have been integral to our firm and he will be greatly missed.”

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