Ohio man charged in courthouse bomb threat probe An FBI agent's affidavit filed with the court said investigators traced numerous bomb threats to prepaid phone cards purchased at a Wal-Mart in Upper Sandusky, located about 40 miles west of Mansfield. The Mansfield News Journal (http://bit.ly/RRjzEz) reported that in 1997 Bristow was labeled a "vexatious litigator." Since 1993, Bristow filed at least 137 lawsuits, targeting law enforcement personnel, judges, media outlets and others.