he was identified as todd harp. harp was beaten and todd was stabbed. >> it is going to take while a -- quite a while before we know what happened here. >> reporter: police are trying to figure out what prompted the argument and who injured who first. it is possible harp acted in self-defense. some say he was peaceful. >> even though he carries a dagger on the back of his pants, it doesn't make him dangerous. >> reporter: police are investigating whether it was gang related. he was not a gang member but had a acquaintances who were. his family describes him as an outgoing teen. >> i would like to know how everything started, what reasons did the guy have to stab my brother, a big age difference, he is only 16. >> reporter: grieve counselors are on the campus helping ivan die as' -- dea was -- diaz's friends. they are decideingwhat to charge harp with. >>> they are looking being into the cause of a 2 alarm house fire that badly burned one person. the fire broke out in the 100 block of scar bother replace. two people