The mother of a letter carrier who shot a supervisor and a manager before killing himself in a Tennessee postal facility says he was not a violent person and had been bullied at work. Tracey Haley told The Associated Press on Thursday that her 28-year-old son Johntra Haley was the person who shot two co-workers Tuesday in Memphis. She spoke at her son’s apartment complex as postal inspectors questioned the man’s sister. The inspectors declined comment. Friends and family of the victims have praised supervisor Demetria Dortch and manager James Wilson Jr. as nice and friendly people.