USA Today is reporting:

U.S. Rep. Michael McCaul, a Republican from Austin, was briefed by military officials and said Hasan had taken some unusual classes for someone studying about mental health.

“He took a lot of extra classes in weapons training, which seems a little odd for a psychiatrist,” McCaul said.

McCaul said Hasan had received poor grades for his work at Walter Reed and was not happy about his situation in Fort Hood, where Hasan apparently felt like “he didn’t fit in.”

“He’s disgruntled because he had a poor performance evaluation, he doesn’t believe in the mission, he’s looking at getting transferred to Afghanistan or Iraq,” McCaul said. “He’s not happy about all that.”

McCaul added that officials planned to interview Hasan to try to determine for sure that he was not working with foreign agents.

“From an intelligence standpoint, that’s key, finding out if he talked to anyone overseas,” McCaul said.

Hasan had come to the attention of federal law enforcement officials at least six months ago because of Internet postings that discussed suicide bombings and other threats, according to a federal law enforcement official who spoke to The Associated Press on condition of anonymity because he was not authorized to discuss the case.

The official said investigators were trying to confirm that Hasan was the author of the postings, one of which was a blog that equates suicide bombers with a soldier throwing himself on a grenade to save the lives of his comrades. One of the officials said federal search warrants were being drawn up to authorize seizure of Hasan’s computer.