Sweden on Friday said it will introduce a bill to amend weapon laws and restrict access to semi-automatic guns after the country's worst mass shooting this week.

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.

Officials in Sweden have vowed to determine why a man killed 10 people, and apparently himself, in an unprecedented attack that's shaken their "society to its core."