Washington (CNN) President Donald Trump appears to be maintaining his support of Saudi Arabia in the wake of a deadly shooting at a US naval base allegedly perpetrated by a Saudi national -- a crime the FBI presumes is an act of terrorism.

Last Friday, Mohammed Alshamrani, a 21-year-old second lieutenant in the Royal Saudi Air Force and a student naval flight officer, opened fire in a classroom building at Naval Air Station Pensacola in Florida, killing three sailors. Alshamrani was killed after two deputies exchanged gunfire with him.

Alshamrani's motive for the attack is still undetermined, but the FBI is operating with "the presumption that this was an act of terrorism," as they do in most similar cases.

The kingdom is often slow to offer official responses, especially on a Friday, which is considered the holiest day of the week in Saudi Arabia. But the same day of the shooting, King Salman bin Abdulaziz Al-Saud spoke to Trump over the phone. He also quickly instructed his own security services to cooperate fully with US investigators. Lawyers from Saudi Arabia have also been sent to Florida.

Trump relayed that the king's Friday message to him was 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."

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