A Beaver County jury has convicted a man of first-degree murder in the rape and slaying of his ex-girlfriend last year. The panel deliberated for less than two hours Monday before convicting 27-year-old Edward Baker in the June death of 30-year-old Addaleigh Huzyak. Authorities say the victim broke up with Baker the week before she was killed and prosecutors claim that Baker was angry over the break-up. Baker is awaiting sentencing.