MCCANDLESS, Pa. (AP) — Child welfare officials are reviewing the case of a Pennsylvania woman accused of drowning her son and critically injuring another by sitting on them in a bathtub.

State Department of Public Welfare spokeswoman Kait Gillis says agency officials will try to determine if child protection agencies could have prevented the drowning.

Gillis says Allegheny County's Office of Children, Youth and Families also has 90 days to file a fatality report on Tuesday's death of 3-year-old Luke Schlemmer.

The McCandless boy's mother is jailed on homicide and other charges accusing her of killing him and tried to kill his brother, 6-year-old Daniel, at their McCandless home. Daniel is in critical condition.

Last year, the woman backed into the boys with a van. Gillis says officials concluded it was an accident.

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