Two firefighters injured battling two-alarm fire in north Houston

Firefighters battle 2-alarm fire at north Houston apartment complex

Investigators are trying to determine what caused an apartment building to catch fire late Friday. This is the second reported fire at that building.

Around 9 pm. Friday, Houston firefighters were called to the 13300 block of Northborough after flames were seen coming from a vacant apartment building.

Six apartment units were damaged in the blaze. Firefighters were able to stop the flames from spreading to additional units across a breezeway.

Two firefighters were transported to area hospitals after sustaining minor injuries. One firefighter sustained an ankle injury, while  the other suffered from a strained neck and back.

Investigators say the building caught fire two weeks ago. A nearby resident says they heard glass shattering, then saw the apartment catch on fire.

Arson investigators are looking into the causes of the fires.