Swedish police said they were still investigating the motive behind the country's deadliest mass shooting, as local media began reporting details about the gunman.

Sweden’s worst mass shooting has left at least 11 people dead, including the gunman, at an adult education center as officials warned that the death toll could rise.

The king and queen visited the scene of the tragic event that occurred on Tuesday and Swedish flags were flown at half-mast to honor the victims.