Firefighters spent close to two hours tracking down and extinguishing a stubborn fire within the walls of a Central Avenue duplex on Tuesday afternoon.

IBerkshires.com reports the blaze started on the backside of the building, between the first and second floors, and sent smoke pouring from windows and eaves of the circa-1900 home.

It was called in around 2 p.m. The building incurred water, smoke, fire and structural damage.

The cause is still under investigation and a fire watch was expected to go through the night to ensure it did not re-ignite.

Central Avenue was blocked off for most of the afternoon.