Tuesday night, in Chicago’s Humboldt Park neighborhood, a fire injured two elderly people in an apartment building occupied by many elderly and handicapped residents.

Fire officials said an EMS Plan I, which automatically calls ambulances to the scene, was issued at the sight of a fire at 1152 N. Christiana Avenue at about 12:20 a.m.

Smoke was reportedly visible from the fourth floor, and the residents of the building were evacuated and a cooling bus was ordered for the them.

Two men were taking to the hospital for smoke inhalation.

The Chicago Sun Times:

Two male victims were initially taken to area hospitals, one in serious-to-critical condition to the Saint Mary campus of Saints Mary and Elizabeth Medical Center, and the other in fair-to-serious condition to Norwegian-American Hospital, according to Fire Media Affairs.

One man, 51, suffered more serious smoke inhalation injuries than initially thought and was transferred to John H. Stroger Jr. of Cook County where he is now in serious condition, a Harrison District lieutenant said. The other man, a 52-year-old, has been upgraded to good condition early Wednesday.

The fire is said to have been started by misplaced smoking materials, and the home of the two men has been deemed uninhabitable, though all other apartments were safe to return to.