A 28-year-old man has been arrested on suspicion of murder after the discovery of a man's body partly submerged in the River Taff in Grangetown, Cardiff.
The dead man has been named as David Alun Lewis, 45, from Ystrad Mynach.
Police were alerted by an anonymous call made just before midnight on Wednesday from a phone kiosk on Clare Road, Grangetown.
A post mortem examination is continuing to find the cause of Mr Lewis' death.
More top news
Around 100 students and young people have marched from Cardiff City Centre to the Senedd in Cardiff Bay over the EU referendum vote.
Owen Smith has followed Chris Bryant and Nia Griffith out of the Shadow Cabinet. He said the Labour leader's team could split the party.
An exhibition tour of many ‘never before seen’ photographs of David Bowie is set to visit Cardiff.