Authorities at the U.S. Army base at Fort Hood say a gunman opened fire at the facility Wednesday, causing multiple casualties.
Officials at the huge base, the scene of a mass shooting in 2009, confirmed Wednesday's shooting after it was first reported on social media. Several U.S. officials, including Texas Congressman John Carter, are reporting at least one fatality and as many as 14 others wounded -- several of them critically. There are multiple reports that say the suspected shooter is dead.
President Barack Obama, speaking from Chicago, offered condolences, saying "we're heartbroken that this might have happened again." He referred to the wounded and their families as those "who have sacrificed so much for freedom," and said the situation at the base is fluid. "We are following it closely," he said.
Shortly after the first reports of gunfire, television footage showed helicopters overhead as military police searched the base. Nearby civilian police agencies searched vehicles and helped seal the perimeter of the base, located south of the city of Waco.
Fort Hood was the scene of a mass shooting spree in 2009. Thirteen people were killed and more than 30 others wounded when an Army psychiatrist opened fire on personnel.
After that shooting, the Pentagon ordered tightened security at all U.S. bases.