UPDATED 02/07/12 12:52 p.m.

CHICAGO (CBS) — A 77-year old woman was hospitalized, and several senior citizens were displaced, when a fire broke out in a South Loop seniors’ apartment building early Tuesday morning.

The fire was first reported about 12:30 a.m. at The Oaks Dearborn Park, a residence for low-income seniors at 820 S. Park Terrace, near Clark and Polk streets in the Dearborn Park planned development.

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The fire was on the fifth floor of the eight-story building.

Five ambulances were sent to the high-rise building in addition to firefighting equipment. Crews managed to put out the still-and-box alarm fire within half an hour.

The hospitalized woman suffered minor smoke inhalation injuries, and was taken to Northwestern Memorial Hospital. Police said she was in stable condition.

Some other residents were displaced by the fire. But everyone, including the woman who was hospitalized, was back home by mid-morning.

The fire was contained to just one unit, officials said.

The American Red Cross of Greater Chicago has sent out a a team to provide emergency assistance to the residents.

The cause of the fire is under investigation.

The Sun-Times Media Wire contributed to this report.

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