Police are trying to find out how an 86-year-old woman died when her car ended up in a dyke at Billingborough Fen.
It happened on Wednesday when police were called to a report of a silver Vauxhall Astra in a dyke on Main Road just before 4.30pm.
The woman was dead but police are unsure how the car came to be in the dyke and anyone with information should call PC Robin Dunn on 101.