An Oklahoma sex offender who was released from prison early shot his wife, her three children and their two friends in the head and then killed himself, authorities confirmed Wednesday as concerns grew about why he was free as his trial on new sex charges loomed. Okmulgee Police Chief Joe Prentice said that the victims had each been shot in the head one to three times with a 9 mm pistol when they were found Monday near a creek and in a heavily wooded area in rural Oklahoma. The bodies apparently had been moved there from where they were originally killed, the scene “staged” before Jesse McFadden, a 39-year-old convicted sex offender, killed himself, Prentice said in the first major update on the case.