KRAKOW — A 24-year-old gunman who opened fire in Krakow's main market square Saturday, killing six people and wounding 15 others, has died in hospital, Poland police said.

The shooting erupted around 2 p.m. Saturday in the UNESCO World Heritage site. Witnesses described chaotic scenes as gunshots echoed through the cobblestone plaza. Pedestrians, including families and international visitors, ran for cover in nearby shops and cafes.

Emergency services arrived within minutes. Police cordoned off the square and surrounding streets while paramedics provided immediate medical attention. Fifteen people were transported to several local hospitals across the city. Several underwent emergency surgery, with some remaining in intensive care units.

Police have not released the shooter's identity or details about the weapon. Investigators are working to determine the motive and are expected to issue further statements in the coming days.