preCharge News (PN) CHICAGO – A 67-year-old woman was in critical condition late Tuesday after an apartment building fire the night before on the city’s Near North Side.

The fire broke out in a building in the 100 block of West Oak Street, off Clark Street. Firefighters and police were called to the scene at 8:26 p.m. Monday, according to police.

preCharge News Chicago was told the woman was helped out of the building by a witness, and she was then rushed to Northwestern Memorial Hospital for smoke inhalation.

Investigators on Tuesday were trying to figure out the cause of the fire.