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Naval Air Station Pensacola

Updated at 9:26 p.m. ET

During his rampage last December at a U.S. military base in Florida, the shooter paused to try to destroy his iPhone — a sign, authorities said, that the device held important clues.

Hundreds of people gathered at a candlelight vigil Monday night, running 800 meters in honor of Mohammed Haitham, a 19-year-old former track star and aspiring pilot from St. Petersburg who was killed in a mass shooting at Pensacola Naval Base earlier this month. 

Florida wildlife officials moved quickly Wednesday to try to close a “loophole” that allowed a citizen of Saudi Arabia to legally buy a handgun and ammunition used to kill three people Friday at Naval Air Station Pensacola.

Members of the Lakewood High cross country team with Mohammed Haitham.
Courtesy of Carrie Pratt

Nineteen-year-old Mohammed Haitham was one of three people killed on Friday at the Pensacola Naval Base. Over the weekend, family and friends remembered the St. Petersburg native as an avid runner who loved to make others laugh, and who had recently decided to follow in his mother's footsteps by joining the military.

Florida Governor's Office

Florida Gov. Ron DeSantis on Sunday called for increased vetting of foreign nationals training on U.S. military bases following the shooting Friday at the Naval Air Station in Pensacola that left three dead, including a student airman from St. Petersburg.

The FBI is investigating the shooting at Naval Air Station Pensacola on Friday as an act of terror.

Rachel Rojas, the special agent in charge of the FBI's Jacksonville Field Office, said in a news briefing Sunday that investigators are working with "the presumption that this was an act of terrorism."

Doing so, she said, "allows us to take advantage of investigative techniques that can help us more quickly identify and then eliminate any additional threats to the rest of our community."

There is currently no evidence of such a threat, she added.

An airman from St. Petersburg was among three flight school students killed in Friday’s shooting at the Naval Air Station in Pensacola.