GOUVERNEUR — Firefighters responded to a reported structure fire Nov. 11 at an occupied two-story commercial building on County Route 11, according to an online post from the Gouverneur Fire Department.

Gouverneur fire was dispatched at 6:51 a.m. Engine 17 arrived and reported a working fire, with heavy smoke coming from the rear of the building, officials said.

The engine crew entered the structure and quickly extinguished most of the fire on the first and second floors, according to the department.

The fire was reportedly contained to the rear of the building, but smoke and heat caused damage throughout the structure.

The cause of the fire remains under investigation.

Gouverneur units responding included Engines 17 and 18, ETA-101 and TA-6.

The Heuvelton Fire Department provided an engine crew and tankers, while the Richville Fire Department provided a tanker, officials said.