Police and paramedics were called to a North Staffordshire property after a baby was taken ill.
Two ambulances, a paramedic officer, the community first responder, BASICS doctor, and the Midlands Air Ambulance were called to Longhope Drive near Stone on Thursday (February 27).
Police officers have now confirmed a baby girl was taken unwell and rushed to Royal Stoke University Hospital.
She died on Sunday and the death is currently being treated as unexplained.
A Staffordshire Police spokesman said: “Officers attended a property in Walton, near Stone, on Thursday (27 Feb) after receiving calls from colleagues in the ambulance service that a baby had been taken ill.
“The baby sadly died in hospital on Sunday (1 March).
“The death is currently being treated as unexplained and a post mortem will take place.”
West Midlands Ambulance Service confirmed paramedics attended the scene.
A spokesman said: “We were called at 3.19pm to reports of a medical emergency at a property on Longhope Drive, Stone.
“We sent two ambulances, a paramedic officer, a Community First Responder, a BASICS doctor and the Midlands Air Ambulance from Staffordshire to the scene.
“We have treated one female patient, who has been taken to Royal Stoke University Hospital by land ambulance.”