It happened at 126 Ludlow Street around 4 p.m. Sunday. Officers responded to the scene after receiving multiple 911 calls about a person armed with a weapon.
Police say when they arrived there was blood on the stairs and a man approaching them with a butcher's knife. Authorities report officers told him multiple times to show his hands and drop the weapon. Officials say the man continued to head toward the officers with the knife, so they discharged firearms, striking him.
The suspect, 54-year-old Wei Chan, was taken to the hospital where he was later pronounced dead.
Chan's father, 75-year-old Cheung Chan was taken to the hospital with a laceration to the head. He is expected to survive. The laceration came from his son.
Several responding officers were taken to the hospital for evaluation.
The investigation is ongoing.