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No written procedures for cleaning forensic lab in 1997, Mark Nash trial hears

Summary

During the murder trial of Mark Nash, a 42‑year‑old defendant, the jury heard that in 1997 the forensic laboratory at Forensic Science Ireland had no written cleaning procedures. Dr Maureen Smith, a retired forensic scientist with 35 years of experience, confirmed that while the lab was cleaned, the protocols were not documented. She explained that earlier labs relied more on training and oral instruction, whereas modern labs have extensive written guidelines. Mr Hugh Hartnett highlighted that since 2003 there have been six versions of a "Guidelines on prevention of contamination" document, stressing the need to consider contamination from receipt to analysis. The court noted that in 1997 items were not sealed when moved, and that the same room was used to examine both suspect and victim clothing, with a six‑week gap between examinations. The trial continues. Mark Nash pleaded not guilty.

Who, what, where, when and why

What: Report matter: No written procedures for cleaning forensic lab in 1997, Mark Nash trial hears. Charges or matters: the murder of Sylvia Shields (60) and Mary Callanan (61) between March 6 and March 7, 1997. Procedural stage: trial

When:

• March 6 Hearing Or Sentence
• March 7, 1997 Hearing Or Sentence
• 2015-03-18 Publication

Case subjects

Places mentioned

Topics

Stage Trial Violent Crime

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Read the original CNI report