(CNN) — Federal investigators suspect lightning may have caused the fire at the Mount Zion AME Church in Greeleyville, South Carolina, senior officials in the FBI told CNN contributor Tom Fuentes. The FBI has been working with the National Weather Service to determine whether heavy storms in the area contributed to the fire. A forensic report from CNN meteorologists shows that there were four strikes in the immediate vicinity of the church at 7:18 p.m. ET Tuesday.