Celebrated nationwide, Uppsala hosts the country's largest and most high-profile Walpurgis events, popular with students. And now, with the festival finished, it's only police tape - not flags - fluttering outside the basement barber shop where the shooting took place close to Vaksala Square. The attack happened the day before the Walpurgis festival in Uppsala'I knew something had happened'"It's really sad," says 20-year-old student Yamen Alchoum, who is in the area to eat at a nearby food truck. People intending to visit Uppsala for the Walpurgis festival were advised not to change their plans, as police promised extra resources on the cathedral city's streets and suggested the shooting was likely an "isolated incident". Sweden's Prime Minister Ulf Kristersson was on a work trip to Valencia when the Uppsala shooting took place, but has since described it as "an extremely violent act".