POLICE say a 60-year-old man is in a very serious condition in hospital after he was assaulted in Derry.
A 42-year-old man has been arrested in connection with the assault.
The badly injured man was found inside a property in Sperrin Park at around 8am on Sunday and taken to Altnagelvin Hospital for treatment.
Detectives are seeking anyone with information regarding this crime or anyone who can assist the investigation in any way.
Officers can be contacted at Strand Road police station, quoting reference number 484 02/04/17.
Or information can be passed anonymously to Crimestoppers on 0800 555 111.