About 10 people including the gunman have been killed at an adult education center in what Sweden’s prime minister called the country’s “worst mass shooting.”

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.

Shooter responsible for Sweden's deadliest mass shooting earlier this week was linked to the adult education center where he opened fire, using at least one rifle-like weapon, according to law enforcement officials on Thursday.