It was 1:14 am Saturday morning when the police first received reports of gunfire in downtown Oslo.
They fell in front of the "London Pub", a club well known in the Norwegian capital's gay scene.
A good half hour later, the police announced that two people had been shot and many more injured.
Matthias Wysuwa
Political correspondent for northern Germany and Scandinavia based in Hamburg.
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The police arrested a suspect.
Images from the night show heavily armed police officers in front of barrier tape and shattered panes of glass.
On one, young people are embracing and one is waving the rainbow flag.
It was the night before the planned Pride parade in Oslo.
Pride parade is cancelled
In the morning the shaking in Norway is big.
The police announce that they are investigating the shooting on suspicion of terrorism.
And the Pride parade is cancelled.
On Saturday morning, however, there is also slowly more clarity with regard to the victims – and the alleged perpetrator.
At a press conference, the police announced that ten people were seriously injured and eleven others were slightly injured.
But nobody's life is in danger anymore.
According to the police, shots were fired not only in front of the "London Pub", but also on the street in front of it and in front of a small bar nearby.
The area is popular with night owls in the capital.
The investigating authority is assuming a single perpetrator.
Shortly after the first reports, at 1.19 a.m., they overpowered and arrested the suspect near the crime scene.
It is also clear on Saturday morning that the police and security services know him.
He is 42 years old, a Norwegian citizen with Iranian roots.
He had previously been convicted of aggravated assault and drug possession.
In July 2019, he was investigated for attempted murder and illegal possession of a firearm, writes the Norwegian newspaper "Verdens Gang", but without consequences.
The man is now being investigated for murder, attempted murder and terror.
The motive is still unclear.
The police are still pursuing several hypotheses.
"A cruel and deeply shocking attack"
The organizers of the Pride parade in Oslo announced last night that they were in close consultation with the police.
On Saturday morning, they then announce via social media that the police have given a clear recommendation to cancel the parade and they are sticking to it.
They ask everyone who would have wanted to take part in the parade not to show up.
All other events related to the parade will also be cancelled.
"We send heartfelt thoughts and love to the next of kin, the wounded and others affected," the organizers said.
"We will soon be proud and visible again, but today we will be doing our Pride celebrations from home."
Norwegian Prime Minister Jonas Gahr Støre tells Norwegian media the shooting was "a cruel and deeply shocking attack on innocent people".
"My thoughts are with the victims and their relatives." It is not yet known what is behind this terrible act, "but I would like to say to the homosexuals who are now afraid and sad that we stand together".