THE BRONX - Firefighters battled a destructive two-alarm fire that broke out in Bronxdale today.

EMS officials say the fire started at a six-story, 27-unit apartment building located at 2079 Wallace Ave.

Deputy Chief Ronald Werner says that 125 firefighters responded to the call, which came in at around 12:15 p.m.

The fire started on the first floor of the building and quickly extended to the second floor. One tenant told News 12 the fire started in her apartment, but she doesn't know how. Just as she was grabbing her bag to head out for work, she saw flames.

The heavy smoke covered the entire building, causing high levels of carbon monoxide and damage to the windows.

Officials say that seven people have been taken to Einstein Hospital to be treated for minor injuries, most of which are respiratory in nature. They say none of the injuries are life-threatening, but one person is in serious condition. One firefighter received a minor injury to his hand.

Werner say 27 people were trapped on fire escapes while the fire was still burning. Firefighters were able to get them all out without injury.

The Red Cross was also on-site to lend some assistance to those unable to return to their apartments.

Fire marshals are investigating the charred areas of the building in order to determine what sparked the flames.