DA: Stalker was killed by a Redwood City woman after he fatally stabbed her mother

REDWOOD CITY >> The man suspected of stabbing a Redwood City woman to death in her home earlier this week had been stalking her college-aged daughter, authorities say, adding that the daughter fatally stabbed the man in self-defense during the melee that also left her father seriously injured.

Katayoun Fomanimaskan, 53, died after she was one of three people stabbed or slashed early Tuesday by 23-year-old San Francisco resident Waley Cheong, according to the San Mateo County Sheriff’s Office.

Sheriff’s deputies were called about 5:20 a.m. Tuesday for a report of a stabbing at the home on Sequoia Avenue off West Selby Lane. They arrived to find Cheong dead, Fomanimaskan gravely injured and two other people also suffering from stab wounds, according to the Sheriff’s Office.

Fomanimaskan died at the hospital that day. Of the surviving victims, her 65-year-old husband was still in the hospital Thursday and her 20-year-old daughter has been released, the Sheriff’s Office said.

District Attorney Steve Wagstaffe said the investigation to date has shown that Cheong met the daughter in college and had been harassing her, spurring an encounter May 8 that ended with Cheong’s arrest on a felony charge of making criminal threats.

“The defendant showed up at her house unannounced and gave her until May 13 to kill herself, or hewouldcomebackanddo it himself,” Wagstaffe said.

The woman later reported the threat, and Cheong was arrested but was released on $50,000 bail and ordered to appear incourtAug.24.

Anyone with information about the case can contact sheriff’s detective Joe Fava at 650-363-4192 or jfava@ smcgov.org.