During the prosecution's opening statements today, the court heard how William Jones walked to Claude Road that night in April from his father's house nearby, looking for his girlfriend, who he believed to be with another man at a property in the area.
The prosecution said Mr Jones admits being in Claude Road, and knocking on the door of Peter Lewis' flat. They said he will claim that Mr Lewis threatened him with a knife, which he grabbed and hit him with, accidentally stabbing him.
William Jones denies murder, and the case continues.
More top news
Three Welsh billionaires have made this year's Sunday Times Rich List, with Sir Michael Moritz topping the list for the richest in Wales.
A fine end to the weekend, with sunny spells throughout the day. Moving into the start of the week, more bright spells but feeling colder.
Off to the London Marathon today? If so, send us in your pictures.