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Sterling Traven, 29, was charged Tuesday with two counts of second-degree murder and single counts of premeditated first-degree murder and first-degree assault in the Sunday attack, which killed a guest and two of his housemates, according to charging papers.

Traven and his housemates lived at Oxford House Central Valley, one of approximately 300 such self-run and self-supported addiction recovery houses statewide, according to Oxford House’s website and the organization’s attorney.

Traven later told detectives he grabbed a knife from the kitchen and confronted his roommate, who he claimed was surveilling and recording him without his consent, according to charging papers.

Traven, a former Bellevue resident, was arrested outside the house he shared with eight other men recovering from drug addiction, court records show.

Authorities responded to the home Sunday night after two of Traven’s housemates called 911 to report he’d stabbed multiple people with a kitchen knife, the charges say.