A worker at a South Side Chicago demolition site was killed this morning when a piece of a concrete beam fell on him.

Paramedics and police were called shortly before 9 a.m. to 11 E. 79th Street, officials said. The victim, a man in his 40s, had been working on the top floor of the three-story building when the beam and part of the ceiling fell on him, according to Gresham District police Lt. John Francis. Another man was working with him but was not injured.

We're are trying to gather as much info as we can and we will update when we know more

Update: From what we can gather the worker was working for Heneghan Wrecking out of Chicago

Update: 11/18/2011 The worker has been identified as Miguel Caltzontzin, 39. Caltzontzin was working on the top floor of a building when a beam and part of the ceiling fell on him.

Our thoughts and prayers go out to his family and friends.