Published: Sep 08, 2013 10:35 AM EDT

NAPLES, Fla.- Firefighters spent Saturday night on scene of a fire at Marissa Collections in downtown Naples.

The high-end clothing store is located on Third Street South, just off Broad Avenue.

Naples fire officials say dozens of firefighters responded to the store just before 8 p.m. Saturday night.

They say a bystander reported the blaze. The smoke and flames quickly spread through the first floor and up to the second floor on the south side of the building, but did not reach the outside.

Fire officials will investigate the cause, but they believe halogen lights in the windows may be to blame.