Updated May 4 at 4:30 p.m.
At least one San Francisco police officer shot and killed a white male while he was stabbing an Asian man on the 900 block of Market Street, San Francisco Police Chief William Scott said during a press conference Wednesday afternoon.
The San Francisco Medical Examiner's Office has identified the man who was fatally shot as 26-year-old Nicholas Flusche. The medical examiner's office did not identify a fixed local address for Flusche.
Two uniformed SFPD officers were on a foot beat at approximately 11:22 a.m. when they observed the stabbing, Scott said.
It is unclear if one or both officers were involved in the shooting, which took place between Fifth and Sixth streets. Scott said the SFPD homicide and internal affairs division, the Department of Police Accountability, the San Francisco District Attorney's Independent Investigation Bureau and the Medical Examiner's Office are investigating the shooting.