Ambulance crash death: Post-mortem tests due on victim
A post-mortem examination is due to take place later on a woman who was killed when the ambulance she was a patient in crashed in Lincolnshire.
It happened on Monday, at about 03:00 GMT, near the junction with High Ferry Lane on the A16 Boston Road at Sibsey.
Two male ambulance service staff, aged 62 and 52, were treated for minor injuries.
The 75-year-old woman, who has not yet been named, was pronounced dead at the scene.
Lincolnshire Police have said it could be weeks before it is known why the ambulance crashed.
The road was closed while investigations were carried out and the ambulance was removed from the ditch.
The road reopened to traffic at 13:00 GMT on Monday.
A spokesman for East Midlands Ambulance Service said the ambulance did not have its blue lights flashing at the time of the accident and had been travelling "at normal road speed".
In a statement, the ambulance service said: "One of our double-crewed ambulances was involved in a road traffic collision just before 3am this morning on the A16 Boston Road, Lincolnshire.
"The vehicle contained two of our ambulance crew and a patient who was being taken to hospital. No other vehicle was involved.
"The incident is subject to a police investigation and therefore it is not appropriate for us to make further comment at this time."
Police have appealed for witnesses.