A murder investigation has been launched after a 37-year-old man died following a serious assault in Cardiff.
Police were called to Theodora Street, Adamsdown, at about 3:30 BST on Thursday.
The assault victim was taken to the University Hospital of Wales where he died on Sunday.
An 18-year-old from Tremorfa has been arrested on suspicion of murder and is in custody. A 45 year-old man who was arrested has been released on bail.