Excerpts from Fox32chicago.com:

A 5-year-old boy and his grandfather died early Tuesday after a fire broke out in their home in west suburban Cicero, according to fire officials.

Just after midnight Tuesday, Cicero firefighters responded to calls of a fire at a home in the 4700 block of West 12th Place. Crews found the body of a 5-year-old boy and a man in a second-floor unit. At least four other residents were displaced due to the fire.

“This was a very difficult fire,” said Cicero Fire Chief Dominic Buscemi. “Our firefighters fought through the flames to get to the upstairs bedroom where we believed a man and a child and possibly others were located but we couldn’t save them. The child had a faint pulse but died at the scene. The grandfather was deceased in the burning structure and we were able to recover his body.”

One firefighter was taken to MacNeal Hospital with minor injuries. The cause of the fire is under investigation but strong wind conditions are believed to have played a role in increasing the strength and size of the flames.