The Polish authorities have confirmed that the 24-year-old Polish attacker, who had been injured in a shootout with police, has died in hospital. Prosecutors had opened a terrorism investigation after the man, from the town of ‌Ostrowiec Swietokrzyski in ‌southeastern Poland, opened fire on Kraków’s popular Main Market Square on Saturday afternoon, killing six people, including a Briton, and injuring 17 others. On the first of two days of national mourning declared after the rare mass shooting, police confirmed yesterday that three people found dead at the gunman’s home after the attack were his father, 53, mother, 52, and sister, 21. Five of the injured are foreign nationals from Britain, Austria, Germany, Portugal and Russia. Two police ⁠officers were also among the injured, one of whom was in a serious condition. The interior minister, Marcin Kierwiński, said the suspect was fascinated with far-right ideologies and held “very radical” and “ultra-nationalistic” views. But officials a