Judgment was reserved this evening in the challenge by a Waterford man to his conviction for killing of a man who died almost two months after he was head-butted in a pub toilet. 30-year-old Edward Daly, of Belmont Heights in Ferrybank, was jailed for five years last April for the manslaughter of 47-year-old Patrick Ryan in a bar in July 2005. Mr Ryan suffered cardiac arrest hours after the assault, lapsed into a coma and died seven weeks later, in September. Lawyers for Daly claimed the medical evidence before the court was not sufficient to pass the threshold required for a manslaughter conviction. They said that it had not been established that the assault contributed substantially or significantly to Mr Ryan's death. The DPP rejected this, and said the jury had heard from a large number of medical personnel and it was up to them to look at the totality of evidence before them.