The killing of two Swedish citizens in an attack ahead of a soccer match in Brussels has shocked the Scandinavian country, although the government has been warning for months that Swedes were at greater risk since a recent string of public desecrations of the Quran holy book by a handful of anti-Islam activists.

Swedish Prime Minister Ulf Kristersson on Tuesday noted that the government and the security service in August had raised the terror alert to the second-highest level following threats against Sweden by Islamic extremists. “Now we know with chilling clarity that there were grounds for those concerns,” he said.