Dyfed-Powys Police is investigating the circumstances surrounding the sudden death of a 22-year-old man in Llanelli in the early hours of Saturday (25 March).
Emergency services were called to a flat on Robinson Street, Llanelli, over the concerns for the welfare of a man.
Liam Rees Morgan-Whittle was rushed to hospital but was later pronounced dead.
His family has issued a tribute to the loving son.
“As a family we are devastated by the loss of Liam,” the statement reads.
“He was a wonderful young man who will be sadly missed by all that knew him.
“We would ask for privacy at this sad time.”
Dyfed-Powys Police is treating his death as suspicious and has arrested a 38-year-old man in connection with the incident.
He has since been bailed pending further enquiries.
Officers will be patrolling the area today conducting house to house enquiries.
Mr Morgan-Whittle’s family is being supported by specialist officers.
