Excerpts from nbcchicago.com:

Chicago firefighters and police responded to a house fire at approximately 9:10 p.m. Tuesday at 2550 N. Rutherford, in Chicago’s Montclare neighborhood, and the home belongs to a member of the Chicago Fire Department.

A woman, 34, and three young children — a boy, 7, and two girls, ages 7 and 2, all suffered smoke inhalation as a result of the blaze and were transported to various hospitals in critical condition.

The cause of the blaze is currently being investigated by The Chicago Fire Department’s Office of Fire Investigation.