Mark Humiston software engineer dad & wife Sarah and 3 teenage children shot dead by 15 year old Falls City by Lake Alice, Washington State teen. Fifth sibling survived attack. All five children were home-schooled as authorities now search for motive.
A 15 year old teenage boy allegedly killed his software engineer father, his mom and three of his four siblings at their Falls City, multi-million Washington home during the early morning hours of Monday.
A fifth sibling managed to escape with her life after fleeing the family residence with gunshot wounds.
Mark Humiston, 42, his wife Sarah and three of their children were found shot dead on Monday inside their rustic $2 million mansion in Fall City by Lake Alice, about 30 miles east of Seattle, which has some of the most expensive homes in America and an average income of $120K per household.
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A 15-year-old boy was taken into custody after allegedly murdering five of the family’s seven members.
Police have not revealed the names or ages of the victims — or their relationship to one another.
But neighbors said the teen killed his parents and siblings, except one sister who managed to escape the massacre.
The teen girl was reportedly shot twice and taken to the hospital after receiving medical help from a neighbor. She is in ‘satisfactory’ condition, officials stated.
Humiston, originally from Texas, worked as an Associate Principal at Hargis Engineers in Seattle, where he had worked for nearly 20 years, according to his LinkedIn.
A member of the company released a statement about his passing that read:
“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 the loss of immediate family members. Mark’s leadership and vision were integral within our firm, and he will be greatly missed. Our thoughts are with his surviving family, friends, and colleagues during this difficult time.”
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A case of domestic violence
Sarah Humiston appears to have been a registered nurse. Her nursing license expired at the end of 2022.
The family purchased the sprawling three-bedroom, four-bathroom mansion in 2019, the dailymail revealed.
King County Sheriff’s Office spokesman Mile Mellis said the situation was ‘clearly a domestic violence incident that involves not only a young man who’s now in significant trouble, it involves firearms.’
Mellis added that there was ‘no significant confrontation with the young man that was taken into custody.’
Officials said the teen suspect will face first or second-degree murder charges, as reported by KING-TV.
He is expected to make his first court appearance at 1:30pm PT on Tuesday.
All five children were home-schooled
Neighbors told Fox13 the kids were homeschooled and well-known in the neighborhood, as they were often seen playing and swimming by their lakeside home.
Shocked neighbors told Fox13 the kids were homeschooled and well-known in the neighborhood, as they were often seen playing and swimming by their lakeside home.
Offered neighbor, Cameron Doerrer, ‘the parents probably thought that they were doing the right thing by homeschooling their children, protecting them from sort of these bad things that happen to the world. And here it happens right from within. I don’t know what to think.’
Fall City is ranked 29 out of 273 cities in the US for cost of living, which is 120 percent the national average – with a median home listing price of $1.5 million.
The slayings in Fall City, Washington, were the 25th mass murder in the US so far this year, according to the Gun Violence Archive. The site defines a mass murder as one in which four or more victims are killed.
The killings in Fall City seem to broadly fit the definition of a type of crime known since the 1980s as family annihilations. Those cases often involve a person with a gun who murders multiple close family members.
A 2023 Indianapolis Star investigation found they had been occurring across the US – on average – once every five days.
