St. Johns County Fire Rescue and Jacksonville Fire Rescue were on the scene of a structure fire in the 100 block of Paradise Valley Drive in Northeast St. Johns County.

Crews initially responded to a report of a roof fire with heavy smoke and flames showing.

Upon arrival, crews encountered a working structure fire in the evacuated home. Firefighters immediately began firefighting operations including the protection of adjacent structures.

JFRD said the fire was possibly caused by lightning, but they have not yet determined the exact cause of the fire.

There have been no injuries reported and the cause is under investigation.