HARTFORD, Conn. (WTNH) — A Hartford firefighter is injured after battling a second alarm fire Saturday.

According to fire officials, the second alarm fire took place at 2307 Main Street in Hartford. They say when crews arrived there was heavy fire showing in the upper floors of the vacant building and companies on scene went defensive immediately.

Authorities say there was a partial collapse in the building, where debris hit and injured a firefighter. They say a Mayday was called for the injured firefighter, who was then transported to Hartford Hospital.

Fire Officials say the injured firefighter is in stable condition and is alert.

Authorities say the fire has been knocked down, however crews are still on scene to make sure there is no extension. They say the cause of this fire is under investigation.This is a breaking news story. Stay tuned with News 8 for more updates.