MADISON, Wis. -

An apartment fire on Saturday night left seven people on Madison's near east side without a home and caused damage throughout the three-story building.

Firefighters were called to 420 S. Baldwin St. at 9:43 p.m. Saturday. Firefighters didn't see smoke or fire showing from the outside of the building.

A fire crew entered the building and encountered heavy smoke when they reached the second floor. They located a fire in the laundry area of the apartment and quickly extinguished the flames, according to a Madison Fire Department news release.

Six people and several cats that lived in the building escaped without injury.

Fire officials said the quick response stopped the flames that had extended out of the window and were spreading into the eaves.

The fire was under control within 10 minutes, but it caused approximately $125,000 damage to the building and contents, according to the news release.

The second-floor apartment sustained heavy fire damage in the laundry area and smoke damage throughout the apartment. A third-floor apartment also sustained smoke damage.

Firefighters ventilated the smoke from the three apartments and contacted Madison Gas and Electric to disconnect the building's electrical service.

Fire officials said the cause of the fire is under investigation.