Crown completes its case in Mile End murder trial of itinerant musician The last prosecution witness on the stand was a DNA expert whose testimony supported Raymond Henry Muller's confession to police. Author of the article: Paul Cherry • Montreal Gazette Publishing date: Apr 23, 2021 • 3 hours ago • 3 minute read • The couch Cedric Gagnon was killed on. Raymond Henry Muller confessed that he hit Gagnon with a bass guitar as Gagnon slept on this couch. On Thursday, a DNA expert confirmed blood with Gagnon's DNA was found on the couch. Court files Article content The prosecution in the murder trial of Raymond Henry Muller has finished presenting evidence in the case being heard at the Montreal courthouse.