Jacek Jaworek

Jacek Piotr Jaworek (born 21 May 1969) is a Polish former construction worker who on July 10, 2021, in the village of Borowce killed his brother, sister in law and their 17-year-old son with a firearm after an altercation between them had taken place. In spite of the involvement of 200 police officers, European arrest warrant and Interpol red notice, authorities were unable to detain him and as of March 2024 his whereabouts are unknown. Europol had put Jaworek on the "EU Most Wanted" list.

On 14 October 2023, a corpse was found about 20 kilometers away from Borowce, where Jaworek committed his crimes. However, after DNA testing had been conducted, police refuted claims that it was Jaworek's body and concluded that it was a separate murder without any relation to his case.

On 20 July 2024, another corpse with a head wound was found a few kilometers from crime scene. Some sources unofficially stated it was Jaworek's body but police did not confirm this and is taking DNA test to determine validity of these claims.