The Islamic Society of New Tampa, a mosque in Florida, was the latest target of arson on Friday, the Associated Press reported.
The Hillsborough County fire department responded to the fire around 2 a.m. After assessing the scene and evidence, investigators determined it was intentionally set.
Authorities said holes were found in the door but concluded that they were not caused by bullets.
The sprinkler system and smoke also caused damage to the carpet inside the mosque.
Wilfredo Amr Ruiz, spokesman for the Council on American-Islamic Relations in Florida, said, "It is worrisome that our community has fallen victim of what appears to be another hate crime."
Another Islam house of worship was set on fire in September in Fort Pierce, FL. It took five hours for firefighters to extinguish the blaze, and Joseph Schreiber was ultimately sentenced to 30 years in prison.
No one was hurt in either incident, according to NBC news.
Interfaith communities gathered to support the Islamic Society of New Tampa.
Investigators from the U.S. Bureau of Alcohol, Tobacco and Firearms and Explosives were at the scene, but said that the local fire department was leading the investigation.