Book signings by a one-time Chicago mobster turned author have been canceled after a threatening phone call.
Borders spokeswoman Mary Davis says an anonymous caller left the threat on a voice mail at a suburban Oak Brook store. Scheduled signings by Frank Calabrese Jr. this week at that store and a Chicago store were canceled.
Oak Brook Police Chief Thomas Sheahan tells the Chicago Tribune the message was that "no rats can sign books here." Calabrese co-authored the book "Operation Family Secrets: How a Mobster's Son and the FBI Brought Down Chicago's Murderous Crime Family."
He testified at a 2009 trial that ended in the conviction of his father, Frank Calabrese Sr., and several others. They were accused of a conspiracy that included 18 long-unsolved murders.