The cause of an early morning Palatine apartment building fire that injured one resident and left the structure uninhabitable is under investigation, officials said.
The fire broke out in the six-unit building at 1952 N. Green Lane North shortly after 1 a.m. and was declared under control about 20 minutes later, Fire Captain Jim Conn said in a news release.
The first fire crew to arrive reported heavy smoke coming from an open second-floor balcony sliding door, he said. The last of the residents was getting out of the building as firefighters arrived.
A man suffered burn injuries, was taken to Northwest Community Hospital in Arlington Heights and later transferred to Loyola University Medical Center in Maywood, Conn said.
Fire damage was limited to the building's rear stairwell, but several apartments suffered heavy smoke damage. Palatine Neighborhood Services determined the building was uninhabitable because of the damage, Conn said.
The Arlington Heights Fire Department assisted.