Wednesday, 10am: Police have issued an appeal for witnesses who may have seen an ambulance moments before it was involved in a fatal collision at Sibsey on Monday morning.
A 75-year-old woman from Sutton-on-Sea died after the ambulance she was travelling in as a patient crashed off the A16 just before 3am.
Yesterday a post mortem was carried out but the results are unlikely to be known before the end of the week.
A formal identification has yet to be carried out and an inquest should be opened into her death tomorrow.
The investigation into this collision is being led by Collision Investigating Officer Robin Dunn of the Lincolnshire Police Collision Investigation Team.
Robin is appealing for witnesses to come forward who saw the ambulance leave the road or who may have seen it travelling along the A16 towards Boston before the incident.
Anyone with any information can contact Robin on the Collision Witness Hotline on 01522 558855 quoting incident 19 of December 10.
Monday, noon: An elderly patient died after the ambulance she was travelling in crashed into a ditch off the A16 in the early hours of this morning.
A 75-year-old woman was pronouned dead at the scene of the crash, which happened near the junction with the B1184 High Ferry Lane at Sibsey just before 3am.
Two ambulance staff, a 62-year-old man and a 52-year-old man, were taken to Boston Pilgrim Hospital and treated for minor injuries.
The road is still closed, with traffic being diverted.
An spokesman for East Midlands 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.”
Phil Milligan, East Midlands Ambulance Service Chief Executive, added: “We offer our sincere condolences to the family and friends of the patient who died following this tragic incident.”
Police are appealing for any witnesses to the incident to get in touch by calling 101, quoting incident 19 of December 10.