South Wales Police says a body has been found in the River Ely, near Penarth Road in Cardiff.
Formal identification has not yet taken place.
The family of 34-year-old Ben Thompson from Haverfordwest, who has been missing for more than a month after watching Wales play in the Six Nations, has been informed and are being kept updated by family liaison officers.
More top news
The last time Wales reached the finals of a major tournament was the 1958 World Cup - and Swansea City legend Cliff Jones remembers it well.
Labour AM Jenny Rathbone says she's been sacked as chair of a committee after going public with concerns about the cost of plans for the M4.
The stepson of an esteemed poet has won a reduction in the sentence he was given for her murder.