Bombs in 023?

Safety alert:

• I just got off of the phone with a 023rd district police officer, who informed me of the following:
  
  Three devices were found in the alley behind the McDonald's Restaurant at Wilson Avenue & Sheridan Road.
  
  One was a dud or intentionally not working. The other two were live and filled with about a gallon of acid, which when the bomb squad detonated them from a safe distance, blew in every direction.
  
  The theory now is that the first one was to lull first responders into a false sense of security so they'd be lackadaisical and careless in defusing the other two.

We're getting this from a number of e-mails and a couple of comments.