LOS ANGELES (CBS) — Three children and a couple of adults had to be rescued from a balcony Wednesday when a fire broke out in the laundry room of an apartment building in the Lincoln Heights area of Los Angeles.

Authorities said no one was injured.

The blaze was reported at 5:27 p.m. at 2505 N. Hancock St., said Matt Spence of the city fire department.

It took 55 firefighters 24 minutes to knock down the flames, which were not visible from the building’s exterior but generated a lot of smoke.

The fire is believed to have started in a laundry room on the second floor, though the exact cause was under investigation. Firefighters opened up holes in the roof to ventilate the smoke and flames.