A forensic pathologist warned against “over interpreting” evidence from wounds left on a murder victim as the defence case opened yesterday in the Supreme Court trial of his alleged killers.Katrina Burgess and Cleveland Rogers deny the premeditated murder of 32-year-old Marcus Gibbings, whose body was found at his former apartment in Devonshire on October 26, 2006.Ms Burgess was the former girlfriend of Mr Gibbings and Mr Rogers is her half-brother.Mr Rogers elected not to give evidence.The jury heard from Christopher Milroy of the Eastern Ontario Forensic Unit.Dr Milroy, who has provided post-mortem evidence to the Bermuda Police Service, as well as giving evidence in court, said he had been hampered by the absence of a murder weapon.He was questioned by Susan Mulligan for the defence and Carrington Mahoney for the Crown on the type of knife that could have inflicted Mr Gibbings’s injuries. Dr Milroy said: “We have some wounds that have evidence of serrations, and others that are clean-cut.”He added he could not exclude the possibility of more than one knife being used.Dr Milroy said: “We are speculating. We don’t know where the knife is and therefore that creates its own problems.”Mr Gibbings’s injuries included what appeared to be a defensive injury to his hand and stab wounds to his heart and liver.The trial, before Puisne Judge Craig Attridge, continues.• It is The Royal Gazette’s policy not to allow comments on stories regarding criminal court cases. This is to prevent any statements being published that may jeopardise the outcome of that case.