A 10-year-old girl who was found dead in Surrey was known to the authorities, the county council has confirmed.
Council leader Tim Oliver said the National Child Safeguarding Panel had been notified and a multi-agency review was under way.
"This Rapid Review will determine whether a Local Child Safeguarding Practice Review is to be undertaken by the Surrey Safeguarding Children Partnership," Mr Oliver said.
He explained: "A Local Child Safeguarding Practice Review is a statutory process, bringing together partners including the police, health, social care and education to review practice of all agencies involved, organisational structures and learning."
Surrey County Council says it is "working tirelessly" to understand what happened to Sara.
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