Pensacola shooting 'appears to be a terrorist attack,' White House official says

The motive behind a 21-year-old gunman\'s attack on Naval Air Station Pensacola still remains undetermined, but the FBI is treating it as \"an act of terror,\" a member of the agency said. Source: FBI
By Christina Maxouris, CNN

(CNN) -- The motive behind a 21-year-old gunman's attack on Naval Air Station Pensacola still remains undetermined, but the FBI is treating it as "an act of terror," a member of the agency said.

Working under the "presumption that this was an act of terrorism" will allow agents to take advantage of certain investigative techniques, FBI Special Agent in Charge Rachel Rojas said.

Mohammed Alshamrani, a Saudi Arabian Air Force officer who had been in flight training at the base for two years, opened fire in a classroom building on Friday, killing three sailors who ran toward danger to protect others, officials said. Several others were injured.

The deadlyshooting "appears to be a terrorist attack," White House national security adviser Robert O'Brien said. Authorities haven't found ties between the attacker and terrorist groups.

"We don't know yet if he was acting alone," O'Brien said on CBS' "Face the Nation" Sunday. "The FBI is investigating, and they've been interviewing, interrogating other Saudi students.

The victims were Airman Mohammed Sameh Haitham, 19, of St. Petersburg, Florida; Airman Apprentice Cameron Scott Walters, 21, of Richmond Hill, Georgia; and Ensign Joshua Kaleb Watson, 23, from Enterprise, Alabama.

"If not for their actions, and the actions of the Naval Security Force that were the first responders on the scene, this incident could have been far worse," said Capt. Tim Kinsella, the commanding officer of Naval Air Station Pensacola.

The shooter used a handgun and was killed after two deputies exchanged gunfire with him.

As details continue to emerge, there's a lot still under investigation. Here's what we know about the shooting so far:

Several other Saudi nationals were questioned

Over the weekend, several Saudi nationals were detained for questioning in connection to the attack, a US official told CNN. The officialdidn't provide information on their connection to the gunman.

Alshamrani and a small group of Saudi nationals traveled to New York City over the Thanksgiving holiday, a law enforcement official told CNN.

They visited several museums and Rockefeller Center, the source said, but authorities don't know why they traveled to the city. The Saudis who accompanied Alshamrani are currently being interviewed by law enforcement and are being cooperative, the source added.

At least one Saudi national also filmed the shooting, US Defense Secretary Mark Esper said.

On Sunday, the FBI said it was reviewing surveillance videos and a video taken by a bystander after the attack. A senior law enforcement official told CNN that one Saudi national who recorded the aftermath was considered a bystander, adding investigators didn't believe this person was involved in the attack and was far away from the scene when he captured the emergency response after the incident.

Friends of the gunman were detained after the killing, one or two of which recorded the attack, Esper said. It was unclear when they began filming, Esper told "Fox News Sunday."

A separate law enforcement official familiar with the ongoing investigation says there is currently no indication of anything nefarious regarding any individual who recorded the attack scene.

The official says all witnesses to the incident are being interviewed.

Twitter account may have been linked to shooter

Minutes before authorities were alerted to the attack, a Twitter account aligning with the shooter's name posted a message that raises the possibility the attack was inspired by al Qaeda and its founder, Osama bin Laden, CNN's Nic Robertson and Paul Cruickshank wrote.

The message, addressed to the American people, declared hate for Americans because of their "crimes" against Muslims. It made no reference to an impending attack. Instead, it repurposed words used by bin Laden and the American al Qaeda terrorist cleric Anwar al-Awlaki.

CNN has been unable to verify the source of the tweet which was previously reported on by SITE Intelligence Group. Law enforcement has not commented on it.

A Twitter spokeswoman says the account was suspended, adding "That's all we have to share."

Florida Gov. Ron DeSantis said in a Sunday news conference the shooter had "a major social media trail."

"This guy was somebody who had just a deep-seeded hatred for the United States and that was pretty clear from that," he said. "For us to be bringing in these foreign nationals, you have to take precautions to protect the country."

Foreign students from "partner nations" have trained at the base for years, Capt. Tim Kinsella, the commanding officer of NAS Pensacola, said.

The shooter was vetted before his entry into the pilot training program and after the shooting with nothing of concern found, a law enforcement source told CNN. But the state's governor said Sunday the shooting could have been prevented if there was "better vetting."

He bought his weapon using a hunting license

The shooter had bought the gun he used in the attack legally, two law enforcement officials told CNN.

One source said Alshamrani purchased the weapon from a gun store earlier this year using a hunting license, which allows a non-immigrant on a non-immigrant visa to purchase a gun.

Alshamrani used a Glock 9 mm pistol he bought "legally and lawfully," Rojas told reporters.

Alshamrani's uncle said his nephew had done "nothing suspicious" before moving to the US.

Saad bin Hantim Alshamrani said his nephew was "likable and mannered towards his family and the community." Alshamrani said he "has his religion, his prayer, his honesty and commitments" and that he was a "likable kid, smart, he was exceptionally smart."

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