trial heard.Robbie Smullen in accused of murdering 22-year-old Barry Dixon who died in hospital after being discovered injured in a Perth flat.Giving evidence at the High Court in Edinburgh on Tuesday, Smullen said Barry had come at him with a blade and he grabbed his arm.The 23-year-old said he “fell on top of him” and only realised Barry had been wounded when standing back up.Smullen told the jury he was “terrified” and “panicked”, fleeing the flat he shared with partner Shannon Beattie