Police investigate the scene after several shots were fired outside the London Pub in the center of Oslo, Norway, on Saturday. Photo by Javad Parsa/EPA-EFE
June 25 (UPI) -- Oslo, Norway, canceled its gay pride parade and raised its terror threat to the highest level Saturday after a shooting at an LGBTQ nightclub left two people dead and 21 injured, authorities said.
The shooting took place at 1:14 a.m. Saturday at the London Pub, a second bar and a fast-food restaurant. Police arrested a suspected gunman who they believe acted alone.
Of those injured, 10 were in serious condition.
Police haven't identified the suspected shooter, but described him as being a 42-year-old Norwegian citizen of Iranian descent, according to Norwegian newspaper Aftenposten. CNN reported he was "known to police" and had minor previous convictions.
Authorities said they seized two weapons from him upon the arrest.
Roger Berg, the head of Norway's domestic intelligence and security service, said the shooting was being investigated as an act of "extreme Islamist terror," according to The Washington Post.
The suspect was being held on charges of murder, attempted murder and terrorism, police official Christian Hatlo said.
The attack happened hours before the city's planned gay pride parade. Organizers said pride events scheduled for Saturday have been canceled upon police advice.
Despite the cancellation, thousands of people joined an impromptu parade outside the nightclubs where the shooting took place. Many waved gay pride flags, while others shouted slogans of support for gay rights.