Police suspect a fire at the Florida mosque where Orlando nightclub shooter Omar Mateen worshipped, was set intentionally, authorities said on Monday.
The fire at the Islamic Center of Fort Pierce broke out after midnight, early on Monday.
Authorities made the decision to investigate the fire as as arson after reviewing surveillance video.
"Video tape captured an individual approaching the east side of the building here. Immediately after the individual approached a flash occurred, and the individual fled the area. The Sheriff's Office is currently investigating this as an arson," Major David Thompson of the St. Lucie County Sheriff's Office told reporter.
Authorities plan to release the surveillance video so that the public can help them identify the individual who approached the mosque.
The Islamic Center of Fort Pierce made headlines earlier this year when it was revealed that Mateen worshipped there. Mateen killed 49 people and wounded 53 in the deadliest mass shooting in modern U.S. history, called himself an "Islamic soldier" and pledged allegiance to the Islamic State militant group before being fatally shot by police after a three-hour siege.