One firefighter was injured at a two-alarm blaze that caused heavy damage to a three-family apartment house in Johnson City.

Authorities say several people called 911 to report the fire at 43 Endicott Avenue around 5 p.m. on Thursday.

Off-duty Johnson City firefighters were called to help battle the blaze. Units from Binghamton and Prospect Terrace also assisted at the scene.

The fire was declared under control after about 50 minutes. Firefighters were on the scene of nearly four hours.

The firefighter who was hurt was treated at Wilson Medical Center for minor burns. No other injuries were reported.

The second and third floors of the structure sustained fire damage. The entire building had smoke and water damage.

Fire investigators say the cause of the blaze has not been determined. According to Johnson City Fire Marshal Paul Hlebica, the fire does not appear to be suspicious.

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