Officers were called to land off Strawberry Lane near Great Wyrley at 8.45am on 5 September by paramedics from the West Midlands Ambulance Service, who were responding to a report of a baby in cardiac arrest.
The baby, who was pronounced dead at the scene, has been named as Lacey May Oxford.
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Lacey’s death is still being treated as unexplained as officers continue to investigate the circumstances, Staffordshire Police said.
Four people arrested in connection with the investigation remain on conditional police bail.
Staffordshire Police said in a statement: “Our inquiries are continuing and we will continue to provide updates on this investigation when we are able to do so.”
