A motorist in his 20s has been arrested after a paramedic and an elderly patient were killed when an ambulance crashed into a tree in Hampshire.
The incident took place on the A337 Brockenhurst to Lyndhurst road in Hampshire this morning and involved a car - driven by the detained man - and the ambulance.
The ambulance left the road and hit a tree, Hampshire Police said. They added that the 25-year-old man was arrested at the scene of the crash on suspicion of causing death by driving without due care and attention.
The driver of the ambulance - a female paramedic - and an elderly male patient travelling in the rear of the vehicle died at the scene.
A male crew member and a male relative of the patient, who were both in the back of the ambulance, suffered serious injuries. The male crew member was then airlifted to Southampton General Hospital by the Hampshire and Isle of Wight Air Ambulance.
Gwyn Williams was over taken by the ambulance shortly before the crash and told ITV news what he saw:
Paul Jefferies, Area Manager at the South Central Ambulance Service said it was a "sad day", for the emergency service.
Mr Jefferies added that the service would continue to work with Hampshire Police to investigate the scene.
The car involved in the incident, a blue Seat Alhambra, was also travelling north, said Hampshire Police.
Inspector Kirsty Shannon, of Hampshire Police, said:
This is a very tragic incident and our sympathies are with the families of the ambulance driver and patient.
Clearly, we are in the early stages of our investigation and are examining the events prior to the collision. Contrary to rumours circulating, however, there is no suggestion any wildlife was involved.
The other driver involved, from Brockenhurst, was uninjured but remains in police custody. Hampshire Police urged witnesses to come forward to help with the investigation.