UPDATE 1-Saudi suspect in U.S. Navy base attack linked to anti-U.S. Twitter screed

The Saudi airman accused of killing three people at a U.S. Navy base in Florida appeared to have posted criticism of U.S. wars and quoted slain al Qaeda leader Osama bin Laden on social media hours before the shooting spree, according to a group that monitors online extremism. Federal investigators have not disclosed any motive behind the attack, which unfolded at dawn on Friday when the Saudi national is said to have begun firing a handgun inside a classroom at the Naval Air Station Pensacola. Among those killed was a recent Naval Academy graduate who dreamed of being a fighter pilot, according to the victim's family.

A sheriff's deputy fatally shot the gunman, authorities said, ending the second deadly attack at a U.S. military base within a week. Within hours, Saudi Arabia's King Salman had called U.S. President Donald Trump to extend his condolences and pledge his kingdom's support in the investigation. Authorities confirmed the suspect was a member of the Royal Saudi Air Force who was on the base as part of a U.S. Navy training program designed to foster links with foreign allies. They declined to disclose his name or identify his victims.

Two U.S. officials, speaking on condition of anonymity, named the shooter as Second Lieutenant Mohammed Saeed Alshamrani. Two of the eight people injured were sheriff's deputies who were shot as they responded to the scene but were expected to recover.

One of the dead was identified by relatives as Joshua Kaleb Watson, 23. A recent graduate of the Naval Academy in Annapolis, Maryland, he had arrived at Pensacola two weeks ago for flight training, his family said. "Joshua Kaleb Watson saved countless lives today with his own," Watson's brother, Adam Johnson, wrote on Facebook on Friday. "After being shot multiple times he made it outside and told the first response team where the shooter was and those details were invaluable. He died a hero and we are beyond proud but there is a hole in our hearts that can never be filled."

OTHER SAUDIS QUESTIONED

Six other Saudi nationals were being questioned by investigators in Florida, three of whom were seen filming the incident, the New York Times reported, citing an unidentified person briefed on the initial stages of the investigation.

An uncle of Alshamrani, Saad bin Hantim Alshamrani, told CNN from Saudi Arabia that his nephew was 21, and "likable and mannered towards his family and the community." He said his nephew "has his religion, his prayer, his honesty, and commitments." If his nephew was guilty, then he will be "accountable before God," the uncle said. The younger Alshamrani appeared to have posted a justification of his planned attack in English on Twitter a few hours before it began, according to the SITE Intelligence Group, which tracks Islamist extremism on the internet.

He referred to U.S. wars in the Middle East, writing that he hated the American people for "committing crimes not only against Muslims but also humanity," and criticizing Washington's support for Israel, SITE's analysis said. He also quoted bin Laden, the Saudi mastermind of the attacks on the United States on Sept. 11, 2001, according to SITE. Reuters has not verified the authenticity of the account, @M&MD_SHAMRANI, which was suspended by Twitter on Friday. The FBI declined to answer questions about the account.

The base outside Pensacola, near Florida's border with Alabama, is a major training site for the Navy and employs about 16,000 military and 7,400 civilian personnel, according to its website. It is a prominent force in the city. Teresa O'Neal, a baker selling loaves of bread and pastries at a downtown flea market, said she has a nephew in the Air Force who was on base at the time of the shooting. Her daughter lives around the corner.

"We had no idea they trained foreign nationals out there," she said. "That's got to change, these people's own militaries should train them." On Wednesday, a U.S. sailor shot three civilians at the historic Pearl Harbor military base in Hawaii, killing two of them before taking his own life.

Military personnel is normally restricted from carrying weapons on U.S. bases unless they are part of their daily duties, something O'Neal criticized. "Why American soldiers cannot carry weapons on base is a big question," she said. "Our boys were just sitting ducks in that classroom."

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