Three people beaten on Lincoln Road Sunday at 4 p.m. Anyone see it?

My Friend lives on Lincoln Road in Prospect Lefferts Gardens.  He got off the train and was walking home on Lincoln Road Between Flatbush and Bedford, and noticed a man lying on the sidewalk.  He approach and tried to help and was assaulted, Sucker punched.  And apparently there was a third victim.  The first victim is on Life support (apparently he was a tourist from out of town visiting a friends new apartment) My friend had his nose broken, lip split open. etc..  The cops caught the guy and my friend identified him by his clothing. We are looking for witnessed that perhaps saw the first beating.  It happened in front of that huge apartment building and apparently there are no witnesses.  On a Sunday?  in the middle of the afternoon?    

This is very disturbing. I hope your friend and the other victims have a swift recovery.