WATCH: Massive Fire Torches 3500+ Rental Cars at Southwest International Airport

A fire that spread across 15 acres destroyed more than 3,500 rental cars at the rental car overflow area of Southwest Florida International Airport (RSW) on Friday, Lee County Port Authority said.

The cause of the fire remains under investigation. It drew a response from every Lee County fire department with assistance from aviation and fire departments in neighboring Collier and Charlotte counties. Multiple law enforcement agencies in Southwest Florida were also on scene to assist and manage the roads.

The fire was fully contained and extinguished Saturday as crews worked through the night Friday, putting out the flames to ensure it did not continue to spread or cause further damage.

More than 3,800 rental cars, belonging to the various rental car agencies that serve the airport, were undamaged and relocated.