One dead, two stabbed in early morning Riverside County attack

William Simpson
William Simpson Riverside County Police Dept

Authorities in Riverside County are hunting a man they believe stabbed a woman to death and wounded two other people at a home in the town of Murrieta.

Authorities say 19-year-old William Gary Simpson Jr. used to live at the home and is a suspect in Tuesday's early morning attack.

Reports of a woman screaming for police sent authorities to a Milkwood Lane home shortly before 4 a.m. where they found three people with stab wounds.

“We rushed in there, and a guy was beating on the husband,” across-the-street neighbor John Sennett told the Press-Enterprise. “There was blood everywhere. It was horrific.”

The Press-Enterprise says an 18-year-old woman died. Her 48-year-old father and a 17-year-old boy who was spending the night there underwent emergency surgery. There is no immediate word on their identities or conditions.

“We don’t know what the motivation was for this attack,” Sgt. Phil Gomez said in a news conference Tuesday.

Witnesses said Simpson was one of several foster children who had been raised by a family residing at the location, but Murrieta police Lt. Tony Conrad could not verify, according to City News Service.

"There was no special relationship that I'm aware of,'' Conrad told CNS. "They befriended him and allowed him to live there."

Simpson was last seen fleeing the area on foot, reports NBC-LA.

Authorities say the attacker fled out the back door, leaving a blood trail, and hasn't been caught despite a search using dogs and a helicopter.

Anyone with information about Simpson's whereabouts is encouraged to call 951-696-3615 or 911.

With contributions by Paige Osburn

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