A supporter pays his respects outside Stockholm?s Stadion, placing a candle amid flowers and jerseys. A football fan was tragically killed in a fight on the opening weekend of the football season in Sweden. The incident occurred at a match between Helsingborg and Djurgaarden. A Djurgarden supporter was assaulted before the game in a fight between ultras and died of his head injuries. And as news of his death spread, furious away fans invaded the pitch and started rioting. Because of the violence, the match between Helsingborg and Djurgaarden was abandoned. An international football correspondent for a Swedish daily confirmed the death on Twitter. Police confirms that supporter has died in Helsingborg prior to Helsingborg ? Djurgarden season premiere game after fights between ultras. ? Johanna Frändén (@juanitafranden) March 30, 2014 Here are more tweets with images of the scenes inside and outside the stadium as riot police took control of the situation. Premiären mellan Helsingborg-Djurgården avbruten efter att supportrar tagit sig in på planen. http://t.co/I2n4wsCgjG pic.twitter.com/NPQHZ2S4vM ? SportExpressen (@SportExpressen) March 30, 2014 #helsingborg pic.twitter.com/VZph1BZWAc ? BackA (@anetteback) March 30, 2014