FORT HOOD, Texas — The man accused of killing 13 people and wounding 29 at Fort Hood is able to talk, a hospital spokesman said Monday, but it's unknown when investigators might take advantage of his improving health to press forward with their probe into the shooting spree.

Authorities say Maj. Nidal Malik Hasan fired off more than 100 rounds Thursday at a soldier processing center before civilian police shot him in the torso. He was taken into custody and eventually moved to an Army hospital in San Antonio, where he was in stable condition and able to talk, said Dewey Mitchell, a Brooke Army Medical Center spokesman.

Authorities continue to refer to Hasan, 39, as the only suspect in the shootings, but they won't say when charges would be filed and have said they have not determined a motive. A spokesman for Army investigators did not immediately respond to calls and e-mails seeking comment Monday.

Fifteen victims remained hospitalized with gunshot wounds, and eight were in intensive care.

The personal Web site for a radical American imam living in Yemen who had contact with two 9/11 hijackers praised Hasan as a hero.

The posting Monday on the Web site for Anwar al Awlaki, who was a spiritual leader at two mosques where three 9/11 hijackers worshipped, said American Muslims who condemned the Fort Hood attack are hypocrites who have committed treason against their religion.

Awlaki said the only way a Muslim can justify serving in the U.S. military is if he intends to "follow in the footsteps of men like Nidal."

"Nidal Hassan (sic) is a hero," Awlaki said. "He is a man of conscience who could not bear living the contradiction of being a Muslim and serving in an army that is fighting against his own people."

Two U.S. intelligence officials told The Associated Press the Web site was Awlaki's. They spoke on condition of anonymity to discuss intelligence collection. Awlaki did not immediately respond to an attempt to contact him through the Web site.

Hasan's family attended the Dar al Hijrah Islamic Center in Falls Church, Va., where Awlaki was preaching in 2001. Hasan's mother's funeral was held at the mosque on May 31, 2001, according to her obituary in the Roanoke Times newspaper, around the same time two 9/11 hijackers worshipped at the mosque and while Awlaki was preaching.

Awlaki is a native-born U.S. citizen who left the United States in 2002, eventually traveling to Yemen. He was released from a Yemeni jail last year and has since gone missing. He is on Yemen's most wanted militant list, according to three Yemeni security officials.

The officials say Awlaki was arrested in 2006 with a small group of suspected al-Qaida militants in the capital San'a. They say he was released more than a year later after signing a pledge he will not break the law or leave the country. The officials spoke on condition of anonymity because of the sensitivity of the issue.

The Falls Church mosque is one of the largest on the East Coast, and thousands of worshippers attend prayers and services there every week.

Imam Johari Abdul-Malik, outreach director at Dar al Hijrah, said he did not know whether Hasan ever attended the mosque but confirmed that the Hasan family participated in services there. Abdul-Malik said the Hasans were not leaders at the mosque and their attendance was normal.

The London Telegraph first reported the potential link between Hasan and the mosque.