 Solomon broke off his relationship with Warmus and became involved with a new girlfriend, fellow teacher Barbara Ballor.Police suspicions shifted to Warmus when she began to relentlessly stalk Solomon, following him and Ballor to Puerto Rico and calling Ballor's family in an effort to end the relationship.When investigators gained information that Warmus had obtained a .25 caliber Beretta pistol with a silencer shortly before the murder, Detective Richard Constantino checked calls made from Warmus' home phone on January 15.