A 53-year-old man has been arrested on suspicion of murder following the death of a man from Cardiff.
Police say they were called to an address in the Llanrumney area of the city in the early hours of this morning.
The 24-year-old man was taken to the University Hospital of Wales, where he later died.
I would like to reassure the community that a full police investigation is currently underway. We will utilise our extremely strong community links to fully understand the events that led to this tragic death.
Police are appealing to anyone who has any information to contact South Wales Police on 101 or Crimestoppers anonymously on 0800 555 111.
More top news
A full-time carer from Port Talbot is celebrating after winning £1m on the EuroMillions.
Kane Wannell jailed for holding up a Post Office with a fake gun and pointing it at the owner and customer.
Outbreaks of mostly light rain will arrive from the north tonight with hill fog likely.