NEW : Investigators are `` actively pursuing '' a second suspect in shooting . The man who shot and killed two people at the University of Texas campus on Friday morning is still being sought by police. The staffer who died , Gabe Zimmerman , was in charge of community outreach in Giffords ' Tucson office , Karamargin said . U.S. Rep. Gabrielle Giffords was wounded along with 11 others . A suspect is in custody ; law enforcement sources identify him as Jared Lee Loughner .
NEW : Investigators are `` actively pursuing '' a second suspect in shooting . The man who shot and killed two people at the University of Texas campus on Friday morning is still being sought by police. U.S. Rep. Gabrielle Giffords was wounded along with 11 others . A suspect is in custody ; law enforcement sources identify him as Jared Lee Loughner .