Sam Juric · CBC News · Posted: Mar 09, 2023 2:31 PM EST
''Tara Brutzki, with the Centre of Forensic Sciences in Sault Ste. Marie took the stand.
Brutzki told the court she was approached to conduct the review in May 2013.
Over the years, since 23-year-old Sweeney was murdered, Brutzki said DNA technology has made several advancements enabling forensic scientists to make comparisons using smaller samples of DNA, as well as, allowing them to test more complex mixtures of DNA.''
''Brutzki told the jury she was asked to re-examine items submitted by Sudbury police from when Sweeney was murdered. The items included a blood-soaked cotton gardening glove, Sweeney's nail clippings and the teal jacket found in a bush area near the intersection of Paris Street and Walford Road.''
Brutzki said from there, she had to figure out whether Profile 4 could be the biological father of the sources of Profile 2 and Profile 3. Using a discarded sample from Robert Wright Sr.,the results found that he couldn't be excluded as the biological father of either Profile 2 or Profile 3, assuming that Wendy Wright was the biological mother. Ultimately, CFS found that Robert Wright Sr. could not be excluded as Profile 4.
A November 2019 report released by CFS, Brutzki said, used blood samples taken from Steven Wright and also determined he could not be excluded as the source of DNA Profile 2. The probability that a random person unrelated to him would coincidentally share that DNA profile is estimated by CFS to be one in one trillion.
However, during
opening arguments, the defence did not dispute that Steven Wright was in the video store on Jan. 27, 1998. They said he didn't kill Sweeney.''