Nearly 55 firefighters worked for more than two hours Monday to douse a fire that heavily damaged a home in northwest Atlanta.

No injuries were reported in the two-alarm fire Monday, but firefighters had to use an intervention crew to find a colleague who was separated from the rest of the crew.

The fire broke out before 9 a.m. in the 800 block of Glenbrook Drive, off Howell Mill Road.

Atlanta fire Battalion Chief Gregory Shinkle said firefighters were initially dispatched to a one-story house, but, "we got here and it was a one-story wood frame, but it was three stories in the back of the structure."

A fire crew was working inside on the second floor, where there was fire in the walls, when a firefighter got separated from the rest of the crew, according to Shinkle.

"We activated our rapid intervention crew, and got everybody out," he said, adding that there were no injuries to firefighters or civilians.

The residents were at home at the time, but were able to get out safely before firefighters arrived, Shinkle said.