EDMONTON -- Alberta's child advocate is calling for improvements after an eight-year-old in a group home died from an overdose of sleeping medication.

A report from Del Graff says the unidentified girl had complex needs and was on various medications.

A worker at the group home found her unresponsive in bed in early 2014.

Police investigated but could not determine how the overdose happened.

Graff says the provincial government needs to ensure all caregivers follow medication policies.

He says an internal government investigation found gaps in the group home's medication procedures, although changes have since been made.

Graff further recommends the province have a wider range of specialized caregivers and train all frontline child intervention caseworkers to better understand children with disabilities.