Lincolnshire Police are investigating the death of a woman in Newtoft near Market Rasen.
Officers were called to a house in the village just after midday on Tuesday, September 5 where a woman in her 40s was found dead.
Her death is being treated as ‘unexplained’.
A 45-year-old man has been arrested in relation to the incident.
Police say they hope a Home Office Post Mortem examination later this evening or tomorrow will establish the cause of her death.
Anyone with information is being asked to call 101 in confidence and quote incident number 164 of September 5.
Further information will be published as soon as it is available.