The owner of the Washington Heights restaurant where a bouncer was killed early yesterday told the media, "There was an argument between customers and the security guy who worked for us at the time tried to break up the argument and took the guys outside. When he took the guys outside, one of them probably had a knife and tried to stab the other guy, I don't know. But unfortunately the security guy got hurt," adding, "This never happens here. We feel sorry for the family of the worker." No arrests have been made.