harris. reporter: now we know answers to two questions that we were asked yesterday, the who and the why. you ll remember the four hours of terror on the university of texas campus in austin. who would do this? police now releasing the photograph of sophomore, he was a maj math major, colt kwr-pb cooley of austin, and you know, it s kind of typical, we always hear stories after this, the person was so nice and quiet but they even talked to his high school teacher and they say he was a very smart, intelligent kid who had a very positive attitude, always seemed to kind of keep his emotions in check and really a quiet kind of a tkpwaoeurbgs 19 years old, and we know the details now, he opened fire at the fountain, just at the base of the tower, when police showed up on campus after reports of gunfire from that ak47, he ran into the perry library and stayed there and we now know died from a self-inflicted gunshot wound. by the way the camp sus reopened today, students getting back to c