At approximately 2.45pm on Saturday 15 January, police were called to an address in Llanddaniel, Anglesey, by the ambulance service.
A 24 year old male was found deceased inside the premises. The immediate family have been informed and a police family liaison officer is giving them support.
Following an initial police investigation, the incident is not being treated as a crime investigation but enquiries are being completed on behalf of the coroner.