Oops. Here it is.
http://seattlepi.nwsource.com/iraq2002/89776_iraq04.shtml
It was a military bunker. IIRC, Saddam had a bunch of dissidents herded in there at gunpoint because he was aware it was a legitimate military target. (This was discovered later AND reported on) After it was hit, Saddam had Western reporters waiting and ready for a field trip to the "atrocity" and reaped the rewards of a propaganda gold mine.
There was an Iraqi command post in the building and the Iraqi military let civilians sleep there at night. It was an atrocity, but it was an atrocity by the Iraqi military. It's the same thing as them hiding SCUDS in mosques. They did it to provoke an attack for propoganda purposes.
tIt turned out to be a bogus story cooked up by the Iraqi government for propaganda purposes?! It was of a piece with the destruction of the Baby Milk Factory.