Emergency services were spotted taking off from a popular green space in Colchester.
Residents spotted a helicopter from the Essex and Herts Air Ambulance taking off from Old Heath Recreation Ground in the afternoon.
The helicopter was captured leaving the scene at around 5.50pm.
Essex and Herts Air Ambulance and the East of England Ambulance Service have been contacted for further information.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here