A gunman opened fire at an adult education center in the Swedish city of Örebro on Tuesday, killing at least 10 people in what the country’s prime minister called the “worst mass shooting in Swedish history.

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.

Witnesses who survived Sweden’s worst mass shooting have described horror and panic that gripped an adult education center west of Stockholm as the gunman killed at least 10 people.

At least 11 people died, including the gunman, and at least five were seriously wounded in a shooting at an adult education center west of Stockholm.

Swedes are in shock after a school shooting in the small town of Örebro leaving 11 people dead, including the gunman who took his own life. Police are trying to understand why Sweden is witnessing this kind of attack against schools.

Around 10 people were killed in a school shooting in Örebro. The damage at the crime scene was so extensive that investigators were unable to be more definitive, said Roberto Eid Forest, head of the local police.

Sweden has suffered its worst mass shooting in living memory. On Tuesday, a 35-year-old gunman went to a community college in the central city of Örebro armed with a firearm.

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

Sweden's King Carl XVI Gustaf and Queen Silvia on Wednesday visited the grounds of the education centre where 11 people were killed on Tuesday in the Nordic country's worst mass shooting. (Reporting by Johan Ahlander and Anna Ringstrom,

Site of Sweden’s worst mass shooting Live view from outside the adult education center in Orebro, the site of Sweden's worst mass shooting. The gunman also died in Tuesday's shooting, although it’s not yet clear how.