[PHOTOS: Images from Thursday's tragic shooting at Ft. Hood]
[MAP: Ft. Hood in Killeen]
[MASS SHOOTINGS: Timline of mass shootings in the U.S.]
The officials say the postings appeared to have been made by Maj. Nidal Malik Hasan, who was wounded during the shooting incident that left least 12 dead and 31 wounded. The officials say they are still trying to confirm that he was the author. They say an official investigation was not opened.
The officials spoke on condition of anonymity because they were not authorized to discuss the case.
One of the Web postings that authorities reviewed is a blog that equates suicide bombers with a soldier throwing himself on a grenade to save the lives of his comrades.
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