The army base has been put in lockdown and it is not clear how many people have been injured.
A gunman has reportedly opened fire in the Fort Hood Army base in Texas.
The base has been put in lockdown and it is not clear how many people have been injured.
The shooter is believed to be at large, according to authorities, who have advised those on the post to stay away from windows and to keep doors closed and locked.
The base was the scene of a shooting rampage in 2009 where a former army psychiatrist killed 13 people and wounded 32 others.
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