Siblings Killed Family for Money, Cops Say

Feb. 9, 2005 -- -- An Indiana brother and sister allegedly killed their mother after she refused to join them in a plot to kill their grandparents for their money, and then they allegedly went ahead and killed the elderly couple, a prosecutor said today.

Marion County Prosecutor Carl Brizzi said Kenneth Allen Jr., 29, and his sister, Kari Allen, 18, of Noblesville, were both charged with three counts of murder, along with conspiracy and robbery charges.

Kari Allen "may not have directly participated" in physically killing her relatives, but she "acted as a lookout," the prosecutor said.

The siblings were being held in Missouri, where they were arrested after their behavior during a traffic stop made police suspicious. Officers said they found bloody clothes and other evidence in the car.

Under questioning by Missouri police, the two confessed Tuesday to killing their mother and grandparents in late December and early January, police said. The brother and sister allegedly told police they entombed the bodies in concrete in the grandparents' home on the east side of Indianapolis.

On Tuesday, police began a search for the bodies of Sharon Allen, 53, of Noblesville; Leander Bradley, 91; and Betty Bradley, 75.

Early today, they found what they believed to be human remains in recently poured concrete in the basement floor, police said. Authorities then enlisted a University of Indianapolis anthropologist to examine the scene.

Investigators believe the siblings killed Sharon Allen in her Noblesville apartment on or about Dec. 30, Brizzi told ABC News affiliate WRTV in Indianapolis.

"They approached their mother, and they had a conversation about killing the grandparents. She refused, [and] she was knifed to death up in Noblesville," Brizzi said. "They then sometime later summoned the grandmother to that same home in Noblesville and smothered her to death with a plastic bag."

Brizzi said investigators believe the siblings went to the Bradleys' house on Jan. 3 and killed Leander Bradley with a hammer.