take a look at this surveillance from fisher autosales. two men with guns rob the place this morning. and beat up two workers inside. police haven't made any arrests. >> new details now on the deadly shooting that has shaken up a chester county town. tonight we know how police tracked down the suspect. accused offend gunning down his victim right near maine street and phoenix ville. live there tonight. it's impossible to imagine a family anguish during a difficult time like this. you spoke to the victims mother. >> i did. certainly heart ache and pain out here tonight. i talked to the victims mother at a vigil. dozens of people out here to say good-bye to the second son she's lost to gun violence. some of the things left behind, balloons, candles, teddy bears. immediate lid after the shooting the gunman ran up the hill over there, and then got away. >> i can't explain it. it's unreal to me. >> reporter: a mother's heart ache is hard to forget. for the second time in two years. she has to be kvrted after losing a son. josh was shot to death