A five-alarm fire is now under control after it engulfed two industrial buildings and forced hundreds of evacuations overnight in Bridgeport.

Fire officials say the fire was first reported just before 7 p.m. Thursday on Seaview Avenue. More than a dozen fire and rescue departments from surrounding towns were called to help.

Officials told News 12 Connecticut that barrels of perfume exploded in one of the buildings, complicating the fire. The building stored chemicals used to make commercial perfumes.

Firefighters remained on the scene throughout the day Friday to work on hot spots in some of the collapsed areas.

About 400 residents were evacuated. A shelter for those displaced was designated at St. Ambrose School located at 461 Mill Hill Ave.

The area has been deemed safe, and residents are being allowed to return to their homes. However, officials are asking everyone to stay indoors.

Officials say three people were treated for smoke inhalation, including two firefighters. They are expected to be OK.

The U.S. Coast Guard surveyed the shoreline, and found a reddish foam in the river near the fire site. A ban has been implemented on shellfishing in the Long Island Sound, and a recommendation is in place against fishing elsewhere.

The state will continue to sample the water as fire investigators search through the rubble for a cause. The owner of the chemical company is working with the city to provide a detailed list of the products at his warehouse.