http://www.msnbc.msn.com/id/33678801...me_and_courts/
Apparently there are three gunmen (2 of them are still on the loose). They shot at policemen and the SWAT teams among others.
EDIT: More info released:
A U.S. soldier opened fire Thursday at Fort Hood, Texas, killing at least 11 people and wounding 31 others, military officials said. The gunman was shot to death, and two other soldiers were in custody. Lt. Gen. Robert W. Cone, commanding general of the Army’s III Corps, who briefed President Barack Obama on the shootings, said the gunman used two handguns.
NBC News’ Pete Williams reported that a U.S. official identified the gunman as Maj. Malik Nadal Hasan, who was 39 or 40.