A Florida mosque once attended by Omar Mateen , the man who shot and killed 49 people in an Orlando nightclub, was set on fire late Sunday night.
The St. Lucie County Sheriff's Office confirmed the fire at the Islamic Center of Ft. Pierce was the result of arson.
The mosque was also once attended by Moner Mohammad Abu Salha, who later became a suicide bomber in Syria.
Here's a look at the mosque.
Above, you can see the St. Lucie sheriff's representative describing the scene.
One worshipper was distraught at the news.
No injuries were reported. However, mosque leaders told WPEC the center was expecting more than 100 people to attend the start of the Muslim festival of Eid al-Adha.
The mosque reported in June it had faced threats, including arson.
The sheriff's office said it caught the incident on video, which WPEC posted . It shows a man in a hat running from the mosque as it flashes brightly. No arrests have been made.
Festival attendees arriving for an early morning service were redirected.