Dyfed Powys Police have arrested a 28-year-old man on suspicion of murder, following the discovery of a woman's body at a home in Carmarthen.
Police were called to the address at Maes Yr Ysgol at approximately 10:50am on Christmas Day, where the 37-year-old woman was found.
Anyone who was in the area between 5pm on Christmas Eve and 11am on Christmas Day is asked to contact police, said a spokesperson.
More top news
It's judgement day at the Millennium Stadium as Cardiff Blues take on the Ospreys and the Newport Gwent Dragons face the Scarlets.
Showers expected throughout the day especially in the north. Drier and brighter elsewhere but cooler than in recent days.
Most places will become dry overnight, although it will remain generally cloudy with patches of hill fog.