The Montgomery County Coroner's Office confirmed they had the bodies of the Helton children, but they would not release their times of death.
Municipal Court Judge Christopher Roberts set bond Monday at $1 million for Helton in a video arraignment and scheduled a preliminary hearing May 30.
The Ohio woman accused of shooting and killing two of her three children said she did it to "save them from the evils of the world", according to court documents.
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Those children, 8-year-old Khmorra and 6-year-old Kaiden, died Sunday evening after suffering gun shot wounds to the head on May 18. A public defender entered not-guilty pleas for Helton to charges of attempted murder and felonious assault. These charges could change now that the children have died. An 11-year-old girl also home at the time wasn't hurt.
A statement Friday from Montgomery County Children Services says the agency is "truly disturbed" by the shootings. In the affidavit, police say Helton made the admission during an interview with officers. Authorities have said they think she might have mental health problems.