Norwegian police have recommended canceling the Oslo Pride march, which was due to take place later on Saturday, following shootings at three locations.
Police said they were treating the attacks, which killed two people overnight near bars in central Oslo, as a “terrorist attack.”
The suspect was arrested following the shooting, which took place around 1:00 local time (23:00 GMT on Friday) at three locations, including a gay bar in central Oslo.
The Oslo Pride march, which was scheduled to take place in the Norwegian capital Oslo on Saturday afternoon, was canceled due to a deadly nighttime shooting, organizers said.
“All Oslo Pride-related events have been canceled” on “clear” police advice, the march organizers wrote on Facebook.
Police reported two dead and 14 injured, saying two weapons were also seized.
“Now everything points to the fact that only one person committed this act,” said police officer Tore Barstad at a press briefing.
However, police forces have been stepped up in the capital to deal with other incidents, he added.
Officers received the first messages at 1:14 a.m., and the suspect was arrested five minutes later, he said.
The shooting took place outside the London Pub gay club, the Herr Nilsen jazz club and a takeaway food outlet.
Police officials convened to consider the impact of the shooting on the re-enactment Oslo Pride March to be held on Saturday afternoon.
The scene of the shooting was patrolled by heavily armed police officers in bulletproof vests and helmets.
“He looked very determined about where he was aiming. When I realized it was serious, I ran. A bleeding man was lying on the ground,” a woman who saw the incident told the Verdens Gang newspaper.
Another witness quoted by the newspaper mentioned the use of automatic weapons, which the police did not confirm, and called it a “combat zone”.
“There were many wounded on the ground with head injuries,” he said.
According to an NRK radio correspondent who was present at the time of the shooting, the shooter arrived with a bag, from which he pulled out a weapon and started shooting.
Of the 14 injured, eight were taken to the hospital, and six more were treated by medical services.
“Some of them are seriously injured, others are more lightly injured,” Barstad said.
Generally peaceful Norway became the scene of bloody terrorist attacks on July 22, 2011, when right-wing extremist Anders Behring Breivik killed 77 people.
First, he detonated a bomb near the government building in Osloeight people died.
He then disguised himself as a police officer and set off a shooting at a left-wing youth summer camp on Utoya Island, killing 69 more, most of them teenagers.