Two people, including the suspect, are dead following a stabbing at a residence in unincorporated Redwood City early Tuesday morning, according to the San Mateo County Sheriff's Office.
Two other people were injured in the stabbing, which happened around 5:20 a.m. inside a residence on Sequoia Avenue, the sheriff's office said. Those victims were transported to a local hospital. The extent of their injuries wasn't immediately known.
Waley Cheong, a 23-year-old San Francisco resident, has been identified as the suspect. The sheriff's office said this was an isolated incident and that was known to the victims.
Deputies learned that Cheong, who they said is a "former acquaintance of one of the victims," entered the residence and stabbed a 54-year-old woman, a 65-year-old man, and a 20-year-old woman multiple times.
"One of the residents confronted Cheong with a weapon. During the altercation, the suspect was also stabbed," the office said in a news release.
Cheong and one of the victims died at the scene, the other two victims are hospitalized and being treated.
The motive for the stabbings is still being investigated and anyone with information is encouraged to contact Detective Fava at 650-363-4192 or firstname.lastname@example.org.