U.S authorities are investigating a fire that damaged at least one construction vehicle at a Tennessee site where a new mosque is being built. According to AP, the Federal Bureau of Investigation (FBI)'s investigators won't say whether they believe the fire early Saturday was intentionally set at the suburban Nashville project, which has faced vehement opposition. Still, a spokeswoman for the Islamic Center of Murfreesboro said the fire has frightened the area's Muslim community. The center has been in the community for decades, and the new facility represents an expansion.