The mass shooting in the center of Krakow was initially carried out by 25-year-old Michal O. from Ostrowicz Światokrzyski. The man previously served in the Polish army. According to local media, a large amount of weapons and ammunition was found in the trunk of the attacker's car. The car belongs to his 52-year-old father, who has a permit for 11 weapons. The suspect himself had a permit for two units, and had previously worn a bulletproof vest. After his arrest, the shooter underwent surgery and is now in a stable condition. The death toll from the attack rose to at least six. The mayor of Krakow, Lukasz Gibala, declared mourning in the city until November 11.