Tony Nim, 35, of Alhambra walked into the police station shortly before 7:30 a.m. Friday. He was carrying a black backpack and did not respond to front desk questions asking why he was there.
Police say they tried several languages to communicate with him, but he did not respond. Detectives said officers were concerned the man either had mental problems or was under the influence of drugs.
About five minutes later, Nim pulled out a 12-inch knife out of his backpack. That's when three officers opened fire, killing him. No officers were injured.
Nim was declared dead at the scene.