According to a live police radio feed (which you can listen to here), multiple officers were shot by the gunman. KCEN TV reports that six people have been shot. Uncomfirmed reports say that two people have died.
A Reddit thread from the Texas A&M subreddit states that the scanner earlier declared a “mass casualty” situation. Obviously, we'll have more information as this story progresses.
UPDATE (2:55 P.M.): The shooting occurred a few blocks off campus on Fidelity Street near George Bush Drive. A police spokeswoman has confirmed that the shooter is in custody and that “police officers and civilians are injured.”
ABC 13 has helicopter video of the scene here.
UPDATE (3:30 P.M.): KBTX reports that “dozens of shots” rang out in the residential neighborhood. The shooting began at 12:12 p.m. with the shooter going into custody at 12:45 p.m. One police officer was killed and two others were injured.
The press conference can be found here.