PENSACOLA, Fla. (AP) — An aviation student from Saudi Arabia opened fire in a classroom at the Naval Air Station Pensacola on Friday morning, killing three people in an attack the Saudi government quickly condemned and that U.S. officials were investigating for possible links to terrorism.

The assault, which ended when a sheriff’s deputy killed the attacker, was the second fatal shooting at a U.S. Navy base this week and prompted a massive law enforcement response and base lockdown.

Twelve people were hurt in the attack, including the two sheriff’s deputies who were the first to respond, Escambia County Sheriff David Morgan said. One of the deputies was shot in the arm and the other in the knee, and both were expected to recover, he said.

The shooter was a member of the Saudi military who was in aviation training at the base, Florida Gov. Ron DeSantis said at a news conference. DeSantis spokesman Helen Ferre later said the governor learned about the shooter’s identity from briefings with FBI and military officials.

A U.S. official who spoke to The Associated Press on condition of anonymity identified the shooter as Mohammed Saeed Alshamrani. The official wasn’t authorized to discuss the matter publicly. The official also said the FBI is examining social media posts and investigating whether he acted alone or was connected to any broader group.

During a news conference Friday night, the FBI declined to release the shooter’s identity and wouldn’t comment on his possible motivations.

“There are many reports circulating, but the FBI deals only in facts,” said Rachel L. Rojas, the FBI’s special agent in charge of the Jacksonville Field Office. “This is still very much an active and ongoing investigation.”

Earlier Friday, two U.S. officials identified the student as a second lieutenant in the Saudi Air Force, and said authorities were investigating whether the attack was terrorism-related. They spoke on condition of anonymity to disclose information that had not yet been made public.

President Donald Trump declined to say whether the shooting was terrorism-related. Trump tweeted his condolences to the families of the victims and noted that he had received a phone call from Saudi King Salman.

He said the king told him that “the Saudi people are greatly angered by the barbaric actions of the shooter, and that this person in no way shape or form represents the feelings of the Saudi people who love the American people.”

The Saudi government offered condolences to the victims and their families and said it would provide “full support” to U.S. authorities investigating the shooting.