BBC
ST ALBANS, England — One person is in a critical condition and three others were injured in a crash involving a car and an ambulance responding to an emergency call.
The East of England Ambulance Service vehicle crashed at 10:00 BST in St Albans, Hertfordshire.
No patient was on board at the time but two ambulance staff and two members of the public were taken to hospital.
Read full story: St Albans 999 ambulance crash injures four