Here is an update...

http://www.chicagotribune.com/news/l...,0,98752.story

And here is happy news...
http://www.chicagotribune.com/news/l...,1027973.story

There were two cats. One has a microchip and will go back to the shelter associated with the chip. The other does not, and will go to one of the shelters that Animal Care and Control works with. (Animal Care and Control isn't set up to keep them long-term)