Updated at 4:25 p.m. ET: Virginia Tech officials say a weapon was found near the body of the second person who was killed on campus.
Original post: Law enforcement officials tell NBC News they believe the second shooting victim at Virginia Tech University was the man who shot and killed the campus police officer.
NBC's Pete Williams reports that authorities say they're awaiting final confirmation but that they believe the campuswide alert for a gunman at large will soon be canceled.
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