
As the Fort Hood investigation unfolds, officials are taking a much harder look at a radical imam from Yemen.
The feds think his teachings likely influenced suspect Maj. Nidal Hasan and several other jihadists accused of attacks across the globe. CNN's Jim Acosta reports.
Read more: Senate panel seeks to 'connect the dots'
The investigation continues today into what may have driven Maj. Nidal Hasan to allegedly go on a shooting spree that left 13 people dead at Fort Hood. So far the suspect has not spoken to investigators.
So who is he talking to? Retired Col. John Galligan is Hasan's defense attorney. He spoke to John Roberts on CNN's American Morning Wednesday.
President Obama is heading to Fort Hood Army Post for Tuesday's memorial service, to remember the victims of last week's shooting that left 13 dead, 12 of them U.S. soldiers.
Defense Secretary Robert Gates, Texas Gov. Rick Perry and other dignitaries will also attend the service, which is scheduled to begin at 1 p.m. (2 p.m. ET).

Photographs of victims of the Fort Hood shooting are seen surrounding the podium of the memorial service that President Barack Obama will attend today.
CNN special live coverage of the memorial at Fort Hood begins today at 1:30 p.m. ET. You can see it live on CNN, CNN.com/Live, or on your iPhone with the new CNN app.
Fort Hood, Texas (CNN) - Investigators believe the suspected gunman in last week's massacre at Fort Hood acted alone, but his communications had been flagged by U.S. intelligence agencies in late 2008, the FBI said Monday.
[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/images/11/10/hood.sign.art.jpg caption="Army Spc. Ryan Hill and daughter, Emma, 3, light a candle Saturday near the main gate of Fort Hood in Texas."]
The suspect, Maj. Nidal Malik Hasan, remained in intensive care at Brooke Army Medical Center in San Antonio, Texas. In a statement issued Monday night, the FBI said its investigation so far "indicates that the alleged gunman acted alone and was not part of a broader terrorist plot."
Thursday's shooting left 13 dead, 12 of them U.S. soldiers, and 42 wounded.
Hasan, a U.S.-born citizen of Palestinian descent, was a licensed psychiatrist who joined the Army in 1997. He was promoted to major in May and was scheduled to deploy to Afghanistan sometime soon, but had been telling his family since 2001 that he wanted to get out of the military.
A Muslim, he had told his family he had been taunted after the terrorist attacks of September 11, 2001. In August, he reported to police that his car was keyed and a bumper sticker that read "Allah is Love" was torn off. A neighbor was charged with criminal mischief after that complaint.
But the FBI disclosed that Hasan came to its attention as part of an unrelated terrorism probe in December 2008, when agents reviewed "certain communications between Maj. Hasan and the subject of that investigation."
The intercepts "raised no red flags," with no mention of threats or violence that would have triggered a U.S. terrorism investigation, senior investigative officials said Monday.
Pvt. Joseph Foster is one of dozens wounded in the deadly shooting at Fort Hood last week. He was shot in the hip trying to save those around him, but he survived and says he's still ready for deployment to Afghanistan in January.
Foster and his wife Mandy spoke to our John Roberts on American Morning Monday.
Fort Hood, Texas (CNN) - Officers early Friday raided the apartment of a soldier suspected in the deadly shootings at Fort Hood, Texas, searching for clues as to what caused the military psychiatrist to allegedly gun down soldiers he had taken an oath to help, a police spokeswoman said.
The alleged gunman, identified as Maj. Nidal Malik Hasan, opened fire at a military processing center at Fort Hood, killing 13 and wounding 30 others, Lt. Gen. Robert Cone said.
Hasan, a psychiatrist practicing at Darnall Army Medical Center at Fort Hood, was shot multiple times and was taken into custody, ending the shooting rampage Thursday afternoon, Cone said.
In the nearby town of Killeen, a SWAT team and FBI agents were searching Hasan's apartment to help determine what caused the shooting, which military experts called the worst mass shooting at an American military base, Carol Smith, a Killeen police spokeswoman, said early Friday. Read more

