TALLAHASSEE, Fla. (AP) -- Florida prison officials fired a probation officer and three supervisors today accused of failing to keep custody of the lead figure in the beating and stabbing murders of six people in Deltona last week. Corrections Secretary James Crosby said the probation officials missed two key opportunities to put Troy Victorino in jail. One of those times was Thursday before the killings that night. Victorino was arrested July 29 on a battery charge. Officials say that a day later police notified probation officers who were supposed to send a report to a judge requesting an arrest warrant...