Police say they will take no further action against two people arrested in connection with the death of a man in Grantham in January.
Ian Addison, who was in his 40s, was found unconscious in Inner Street and later pronounced dead on January 20. A 20-year-old man and a 31-year-old woman, both from Grantham, were arrested on suspicion of murder and bailed.
Following the results of post mortem and toxicology tests police say they are not treating the death of Mr Addison as suspicious.
A file is being prepared for the coroner.