Government offices, schools and workplaces fell silent in Sweden at midday on Tuesday in remembrance of the victims of a mass shooting at an adult education centre last week when a gunman killed 10 people before turning his weapon on himself.

All Swedish schools and pre-schools will have to make plans to keep unauthorised people off their premises, the government said on Wednesday, as the country tries to come to terms with the worst school shooting in its history last week.

After 11 people died in the worst mass shooting in Sweden’s history, we’re learning more about what happened and U.S. concerns about terrorism.

The motive behind Sweden's deadliest mass shooting may never be known but the fact that almost all of the victims had foreign backgrounds has sparked concern among the country's immigrants.