Police are trying to establish how an elderly motorist died after her car ended up in a dyke in Billingborough Fen on Wednesday.
An 86-year-old woman from the area was found in a silver Vauxhall Astra submerged in a dyke on Main Road and police were called to the scene just before 4.30pm.
The woman had already died but it is not yet clear how the car came to be in the dyke and how long it had been there.
Anyone with information should call PC Robin Dunn on 101, quoting incident number 288 of May 15.