The man who opened fire in an Oslo gay bar on Pride Night last month has deep ties to an extremist leader dubbed "the most dangerous person in Norway."

Two people were killed and at least 21 others wounded in the June 25 attack. A gunman opened fire at three places: the gay bar London Pub; the bar Per på hjørnet; and a takeout restaurant. Among the wounded, 10 were treated for serious, but not life-threatening injuries.

Norway's Police Security Service (PST) determined "that this was an attack motivated by extreme Islamism." A separate Pride Parade and related events were canceled as a result of the attack.