A Naperville mother who left her daughter in the care of a baby sitter while she went to work learned after a frantic search Tuesday night that her little girl had been slain by the caretaker, who also killed her own son, officials said.
The baby sitter, Elzbieta M. Plackowska, 40, was charged with two counts of first-degree murder Wednesday night, DuPage County State's Attorney Robert Berlin said. Sources said the woman had given various explanations for what happened, including hearing demonic voices that led her to stab the children to death.
The bodies of the children — identified by sources as Olivia Dworakowski, 5, and Justin Plackowska, 7 or 8 — were discovered by police in a bedroom of the girl's town home in the western suburb, officials said.
