Four people, including a firefighter, were hurt early Tuesday in a fire on the 29th floor of the Dorchester condominium building on Rittenhouse Square.

None of the injuries appear to be life-threatening, officials said.

Scores of residents were forced to evacuate the 32-story building at 226 West Rittenhouse Square for more than three hours after the fire was reported just before 2 a.m. in a 29th-floor unit. Many took refuge in the lobbies of nearby buildings to stay warm.

The fire was declared under control at 2:53 a.m., the Fire Department said. Its cause is under investigation.

One resident, Tamra Feldman, told 6ABC that she heard the alarm and looked out of her blinds.

“The Fire Department showed up really fast," she said. “I heard this girl screaming, ‘Help! Help! Get me out of here!’ I was like, ‘I’m going.'”

There was no word on the extent of damage from the fire.

The blaze was the second significant fire in two days in an apartment building in Philadelphia. Dozens of people were displaced Monday when a five-alarm fire burned through the top floors of a four-story building in Overbrook.

The cause in the Overbrook fire remained under investigation Tuesday. Officials said the Salvation Army, Red Cross, and other agencies were continuing to work with those affected by the blaze.

Thirty-nine displaced apartment residents were taking refuge at West Philadelphia High School, where the Red Cross has established a temporary shelter, open until further notice, for those without a place to go after the blaze, said Dave Skutnik, spokesman for the Red Cross of Southeastern Pennsylvania. There, he said, the Red Cross and its partners were providing meals and snacks to residents, as well as access to disaster mental health and health services workers.

The extent of damage from the West Philadelphia blaze also wasn’t known Tuesday.

Staff writer Oona Goodin-Smith contributed to this article.