The gunman used a locally purchased Glock 45 9-millimeter handgun with an extended magazine and had four to six other magazines in his possession when he was taken down by a sheriff’s deputy, according to sources familiar with the investigation.
Six Saudi nationals have been arrested after an Air Force trainee – also from Saudi Arabia – opened fire at a naval base in Florida, killing three people and injuring eight.
The men were detained near the scene of the shooting, which took place at Naval Air Station in Pensacola early Friday morning.
Three of the six Saudis were seen filming the entire incident as it unfolded.
No officials have yet stated whether any of them were students inside the classroom where the shooting occurred.
Authorities are probing whether the incident is terror-related.
The shooter, who was shot dead by police, was first identified by NBC News, citing unnamed sources, as Mohammed Saeed al Shamrani.
US officials, who spoke on condition of anonymity to discuss an ongoing investigation, said the suspect was a second lieutenant attending the aviation school at the base.
Military from around the globe attend the Naval Air Station in Pensacola for flight training.
The shooter opened fire in a classroom building shortly before 7am Friday. The attack left four people dead, including the assailant, and eight others wounded.