Police have charged one of two men they were holding on suspicion of murdering a Cardiff man and released the other.
James Way, 30, from St Mellons, died a short time after being taken to the city's University Hospital of Wales on Sunday morning.
It followed an incident at a flat in the Holmesdale Street area of Grangetown on Saturday evening.
South Wales Police said they had charged a 46-year-old man from Grangetown with Mr Way's murder.
A 42-year-old man from Mynachdy arrested on Sunday has been released without charge.
Officers said Mr Way was taken to hospital at 0900 GMT on Sunday in an "unconscious state" and died shortly afterwards.
In a statement his family described him as "a loving, caring son and adoring father."
Police said they were still appealing for information.
Det Insp Mark Lewis said: "I would like to thank the public for the support they have shown and for the information we have received so far.
"If anyone believes they have information that could help the investigation, but haven't got in touch yet, please phone the incident room."
Contact the incident room at Cardiff Central Police Station on 029 2057 1530 or anonymously via Crimestoppers on 0800 555 111.