Twelve people have been killed and 31 wounded in a shooting spree at a Texas military base by what officials believe was possibly carried out by an Army officer.

The suspected gunman was identified by ABC News as Major Malik Nadal Hasan.

The shooter was killed and two other suspects, who are also soldiers, have been apprehended

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Update by Green Arrow

You can read more details of the US Army Major Nidal Malik Hasan responsible for the murders by going here.

At least six months ago, Hasan came to the attention of law enforcement officials because of Internet postings about suicide bombings and other threats, including posts that equated suicide bombers to soldiers who throw themselves on a grenade to save the lives of their comrades.