WINNIPEG—DNA testing found no traces linking the man accused of killing Tina Fontaine to the duvet cover in which her body was found in the Red River in Winnipeg, an expert witness testified Thursday. Amarjit Chahal also told Raymond Cormier’s second-degree murder trial that his lab found none of Cormier’s DNA on samples from a stolen truck that the Crown believes was used to transport the 15-year-old girl’s body. No DNA from Tina was found in the samples from the truck either, Chahal said. Chahal’s lab ran mitochondrial DNA tests on 35 samples including hairs, swabs and pieces of fabric. Mitochondrial DNA tests can be less definitive than nuclear DNA tests often used in forensics, but are necessary when samples have deteriorated, he said. The testimony came one day after a forensic pathologist testified he could not determine how Tina died.