Police have launched an investigation into the death of a man in his 20s in Ingoldmells.
Officers were called to an address in Chapman Court just before 2.30am on the morning of Wednesday, December 6.
The victim was found seriously injured. Police added he was taken to hospital but was pronounced dead a short time later.
A woman, also aged in her 20s, has been arrested in connection with the incident and is currently helping police with enquiries.
A scene guard is currently in place at the property while the investigation continues.
Anyone who has information that could assist the enquiry is being asked to contact Lincolnshire Police on 101 quoting incident 26 of December 5.
Alternatively, people can contact the independent charity Crimestoppers anonymously on 0800 555 111.