We were called to Fenwick department store in Colchester High Street by colleagues in the ambulance service shortly after 11.30am on Tuesday 27 July with reports of concerns for the welfare of a child.
We arrived and found a five-year-old boy had sustained a serious head injury.
Alongside store staff and medics, our officers immediately administered first aid to the boy.
He was taken to hospital in a critical condition, where he remains.
Specialist officers are supporting the boy’s family at this time.
We are supporting an investigation into the incident alongside Colchester Borough Council.