Flames ripped through an abandoned building on Glen Street in New Britain after fire reignited on Monday morning and fire officials are investigating what caused it.
The fire started in the basement, spread to each floor of the building and took firefighters more than three hours to battle.
Flames were shooting from the rooftop earlier this morning, area fire departments were called to help put out the blaze and it was under control as of 6:30 a.m.
Crews remained at the scene after that to battle hot spots.
Mutual aid was in place to cover the firehouse while New Britain firefighters are at the scene.
There are no reports of injuries and police said that they believe the building is abandoned.
