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A man who allegedly stabbed both of his parents before being shot to death by police on Monday in San Francisco’s Richmond District has been identified by the medical examiner’s office as 44-year-old Peter Woo.

Woo’s mother, 73-year-old Nina Woo, succumbed to her injuries a couple of hours after the stabbing, which was reported at about 7:30 a.m. Monday in the 600 block of Funston Avenue, police said.

Officers responded and found Peter Woo’s 78-year-old father in the doorway with stab wounds to his forearm and hand, according to police.

The officers then went upstairs and found Nina Woo bleeding profusely from stab wounds to her upper torso. As they tried to pull her to safety, the officers were confronted by Peter, who was waving a knife in each hand, police said.

An officer used a beanbag weapon against him but it was ineffective, so the second officer then shot him with his gun.

The two victims and their son were taken to San Francisco General Hospital. Peter Woo was pronounced dead at 9:39 a.m. while his mother succumbed to her injuries two minutes later.

A third victim, the 50-year-old sister of Peter Woo, was found hiding in the back of the home in a locked bedroom and was unhurt, police said.

The motive for the stabbings has not been determined, according to police.

The officer-involved shooting is being investigated by the Police Department’s homicide detail and internal affairs division, as well as the district attorney’s office and the city’s Office of Citizen Complaints, per standard procedure.

A community meeting about the shooting is being held by the Police Department in the city’s Richmond District this evening.

The meeting is scheduled for 6:30 p.m. at the Richmond Recreational Center at 251 18th Ave. between California and Clement streets.

Dan McMenamin, Bay City News

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