Helsinki, Feb. 6 -- The death toll due to a shooting at Sweden's Campus Risbergska school rose to 10, including the suspected gunman, police said this week. A final death toll and a conclusive number of wounded hadn't yet been determined.

The shooting happened on the outskirts of the city of Orebro, which is located about 200 kilometers west of Stockholm. Roberto Eid Forest, head of the local police, said that extensive damage at the crime scene made it challenging for the investigators to exactly determine the cause of the incident. Police also expect the death toll to rise.

Investigators said the perpetrator acted alone and he was not previously known to police. The local police head also said there were no warning signs before the at...