Police complete evidence collection tied to triple slaying

INDIANAPOLIS -- Investigators have finished collecting evidence at two homes where a brother and sister allegedly killed their mother and grandparents and entombed the bodies in concrete in a basement.\nPolice completed their work Saturday at the Noblesville apartment of Sharon Allen, 53, who investigators allege that she was the first of the three victims to be slain by her son, Kenneth Lee Allen, 29.\nHis sister, Kari Allen, 18, allegedly served as a "lookout" in all three killings.\nThe siblings were arrested Tuesday after a traffic stop on Interstate 70 near St. Louis and were returned Friday to Indianapolis.\nBoth were scheduled to be formally charged Monday with three counts of murder, three counts of conspiracy and two counts of robbery.\nProsecutors allege that after the siblings killed their mother, they lured their grandmother, Betty Bradley, 75, to the Noblesville apartment and killed her.\nThey then allegedly killed their grandfather, Leander Bradley, 91, at the elderly couple's Indianapolis home and buried all three bodies in its basement.\nIndianapolis Police Department spokesman Sgt. Gary King said Sunday "the investigation is going very well" and that significant evidence had been found at the Noblesville apartment. He declined to say what evidence had been collected.\nPolice said Kenneth and Kari Allen committed the triple slayings in a plot to steal $200,000 in savings from their grandparents.\nMarion County Chief Deputy Coroner John Linehan said Sharon Allen and Leander Bradley have been positively identified, but Betty Bradley has not.\nLeander Bradley died of blunt force trauma to the head, Linehan said. A cause of death for Sharon Allen could not be determined, although there are indications she was strangled or suffocated, he said.