Overview

• Joanna Wronska was sentenced to life imprisonment with a minimum of 15 years and four months for the October 2023 murder of her partner, Marcin Koziol.
• Wronska stabbed Koziol in the chest during a drunken argument at their home in Caia Park, Wrexham, causing a fatal wound that pierced his lung.
• She attempted to mislead authorities by claiming Koziol had stabbed himself and tried to destroy evidence by washing the knife and cleaning blood traces.
• Forensic analysis, including testimony from a Home Office pathologist, disproved her claims, highlighting the implausibility of self-inflicted injuries of such severity.
• A jury unanimously convicted Wronska of murder in April 2025 after a nine-day trial at Mold Crown Court, concluding with today’s sentencing.