Swedish police have confirmed that 11 people have died in the worst school shooting in the country’s history, Swedish daily Dagens Nyheter reported. The suspect, who was not known to police before the shooting, is among the dead, law enforcement confirmed. “This is a horrific event that’s unprecedented,” Örebro police chief Robert Eid Forest said.

Sweden’s right-wing government said on Friday it would seek to tighten gun laws in the wake of the country’s deadliest mass shooting at an adult education center where the attacker appeared to have used several of his own licensed rifles.