New details emerge in Pensacola Naval Base shooting as investigation ramps up

Officials look for a motive and the secretary of defense weighs in.
3:12 | 12/08/19

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Transcript for New details emerge in Pensacola Naval Base shooting as investigation ramps up
Let's get straight to our top story, the latest on the investigation into whether that attack at the naval air base was an act of terror. Overnight a scene we've watched play out in so many American communities. A vigil for the victims of yet another mass shooting. And we are learning new information as we come on the air. This morning, investigators looking into whether the gunman, a member of the Saudi air force, was acting alone. They also say he made a visit to New York City in the days before the attack. Also this morning, other military bases across the country are on alert for the latest we turn to Stephanie Ramos in Pensacola. Good morning to you, Stephanie. Reporter: Eva, good morning. Law enforcement officials artying to follow leads to find out exactly why the gunman opened fire here at the naval air station. Authorities say they're taking at look at his social media footprint, his writings online where he expressed anti-america hate, his phone records but also his classmates. This morning several classmates of the naval air station Pensacola gunman are now undergoing FBI questioning after Friday's deadly attack. The Saudi national part of a training program for international military personnel here in the U.S. Opened fire killing three U.S. Navy sailors and injuring eight others including law enforcement officers. Investigators looking into whether the attack was motivated by terror. I can't say it's terrorism at this time. I think we need to let the investigators, the FBI do its work. Reporter: The FBI now retracing the steps of 21-year-old Mohammed alshamrani, a second lieutenant in the royal Saudi air force including a recent trip to New York City where he visited several attractions. That visit now believed to be tourist in nature. Over ten patients confirmed. Reporter: Alshamrani killing 23-year-old ensign Joshua Watson, 19-year-old airman Mohammed sameh haitham and 21-year-old air men apprentice Cameron Walters, all students there. The shooter then exchanging gunfire with sheriff's deputies who eventually killed him. Do you believe the threat in your community has been eliminated? Right now I'm not -- I'm not prepared to make a statement affirmatively or negatively on that. We're in consultation with the FBI, but I have additional questions that I want answered. Reporter: Brave acts of heroism emerging from the horror. There's going to be individual acts of courage that you're going to hear as you -- as we move forward with this, but I spoke to one deputy today who said that after he was shot, he was placed by another deputy into a chair for quick mobility and then they were trying to wheel him out to get him the mercy medical service that he needs. Reporter: A community now in mourning coming together to find peace including nearby service members stationed at naval air station Pensacola. Pentagon officials say alshamrani started training here in the U.S. In 2017 and was scheduled to finish next summer. Now, since the attack here on Friday, commanders at military installations across the country like this one have stepped up security implementing increased random security measures at their facilities. Eva. Stephanie Ramos for us there in Florida.

This transcript has been automatically generated and may not be 100% accurate.

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