(Undated)--Authorities are saying the Johnston man who reportedly shot and killed an East Providence woman in North Attleboro, Massachusetts on Saturday night was obsessed with her.The Bristol County District Attorney's office says it learned from Brandi Berg's boyfriend that Berg and Steven Fregeolle [[ fruh-gee-OH-lee ]] had worked together and had been in a relationship.The boyfriend reportedly told the D.A.'s office that Fregeolle had recently displayed obsessive behavior and that Berg was confronted by him about seeing someone else prior to the shooting.Fregeolle was found dead of an apparent suicide on Sunday.