More than 100 firefighters responded to a fire at a business in Bethel on Sunday afternoon.
Around 120 firefighters from departments across Litchfield and Fairfield counties responded to the fire on Francis J. Clarke Circle around 1 p.m.
Crews found heavy fire at the center of the building and firefighters were forced to fight the fire from the outside, firefighters said.
To complicate things more, one company makes tape adhesives so there was some flammable materials in the building, fire officials said. The other company makes a non-toxic cleaner.
There is significant damage to the building, fire officials added. They said it doesn't really look bad from the outside, but there is a lot of damage on the inside.
The Department of Energy and Environmental Protection was called in and sampled the air and water, but found both were safe.
No injuries were reported.
Both businesses are expected to be closed on Monday.