Fort Pierce, Fla.— Authorities say the circumstances surrounding a fire at a Florida mosque suggest it could be a hate crime, but they are still trying to verify that.

St. Lucie County Sheriff’s Maj. David Thompson also says the fire early Monday caused “extensive” damage to the Islamic Center of Fort Pierce.

Thompson says surveillance video shows a “white or Hispanic male” walking toward the building carrying a bottle containing liquid and some paper. He soon ran from the mosque, just before a big flash came from the building. He left on a motorcycle with a low seat and high handlebars.

Thompson says given the circumstances — the 15th anniversary of the Sept. 11 attacks and the beginning of the Muslim holiday Eid al-Adha — officials believe the intentionally-set fire could be a hate crime.

Orlando nightclub shooter Omar Mateen once attended the mosque. He opened fire on the gay nightclub June 12, killing 49 and injuring 53.