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.

As the pope invoked upon the Swedish people "Almighty God's gifts of unity and peace," Swedish Cardinal Anders Arborelius of Stockholm lamented the rise of violence in Sweden after 11 people, including a gunman, were killed in the deadliest mass shooting in the country's history Feb. 4.

The authorities said that at least 11 people were killed and that the suspect was believed to be among the dead.