Police can confirm that the man found dead at a house in Millmount Court in Banbridge on Monday 9 July was 55 year old Richard Gerard Scullion, pictured below.
Detective Chief Inspector Eamonn Corrigan said: "We are treating the death of Mr Scullion as murder and we are continuing to question a 28 year old man who was arrested on Monday night.
Earlier today we applied for and were granted an extension in relation to the suspect's detention.
I am renewing my appeal for witnesses or anyone with information to get in touch with us.
Investigators can be contacted by calling 101, quoting reference number 1000 09/07/18.
Alternatively, information can also be provided to the independent charity Crimestoppers on 0800 555 111 which is 100% anonymous and gives people the power to speak up and stop crime.”