The attack on Tuesday - described by Sweden's prime minister as the "worst mass shooting" in the country's history - happened at a school for adults.

Swedish Police have confirmed they are not ruling out the possibility that the mass school shooting was racially motivated as it emerged that the 10 people killed are of multiple nationalities. When asked if they have ruled out the possibility the attack was racially motivated,

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.

A tragic mass shooting at an adult education center in Orebro, Sweden, resulted in the death of about ten individuals, including the gunman, marking the country's worst incident of its kind. As investigations continue,

Around 10 people have been killed in a shooting at an adult education centre in Sweden, police say. More details are emerging of the attack, with the scene described as a "nightmare". Follow the latest.

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."

"It is a very painful day for all of Sweden," Prime Minister Ulf Kristersson said in a statement posted on social media.