Yihong Peng has been named as the 30-year-old man arrested after killing his mother and critically injuring his father at their San Juan Capistrano residence.

Wei Ping Shen, 59, was pronounced dead at the scene of the double-stabbing that also critically injured his father, who is said to be in his 50s. He is expected to survive.


Yihong Peng was booked on suspicion of murder. He was being held in lieu of $1 million bail.

The fatal incident, described by investigators as an “altercation between family members,” began outside a home near La Novia Avenue and Ortega Highway. Deputies responded about 10:30 p.m. to calls from neighbors who reported a man in the street with a knife. The deputies arrived to find the two victims suffering from stab wounds, the news release said. Peng was allegedly seen trying to flee the scene on foot. He was apprehended after a brief pursuit, the sheriff’s statement said, adding that a knife was recovered at the scene. source

The motive for the attack is unknown and under investigation by Orange County Sheriff’s Department detectives.

According to Facebook, Yihong Peng attended Capistrano Valley High.

Anyone with information about the incident is urged to contact the sheriff’s Homicide Unit at (714) 647-7055.