Poland's National Prosecutor's Office released the findings of the investigation into the Nov. 7 killing spree in Krakow and Ostrowiec Swientoczyski, and confirmed that 24-year-old Michael Oksinski carried out both attacks before dying in hospital on Nov. 9. According to investigators, Oksinski first shot dead his parents and his 21-year-old sister in the family's apartment in Ostrowiec Świętokrzyskie. He then went to Krakow, where he opened fire in and around the central market square, killing six people and wounding 15. The six victims in Krakow were four women and two men, including four Polish citizens and citizens from Great Britain and Austria. Six of the injured were foreign nationals. Two policemen were also shot and wounded during the takeover of the attacker. Investigators seized four weapons from Oksinski and his car: two AR-15 rifles and two handguns, along with several hundred rounds of ammunition. Seven more weapons were found in his apartment in Ostrowiec Świętokrzyskie. Prosecutors said Oksinski obtained a gun license in January 2026 and purchased his first gun in March. He died in hospital before charges were brought against him. The motive for his actions remains unknown. The investigation continues, and the prosecutors are checking whether other parties aided, encouraged or assisted in the commission of the crimes, and are trying to establish the full sequence of events. Office of the National Prosecutor of Poland.