A suspect was apprehended nearby, police said. The motive for the attack was not immediately clear.
Two people were killed and at least 10 wounded in a shooting at a nightclub in Norway, Norwegian police said.
A suspect was apprehended nearby, police said. The motive behind the attack was not immediately clear.
"Two people are confirmed dead," the Oslo police department said in a tweet.
"In all, 10 people are receiving treatment from health personnel. Three people are seriously injured," Tore Barstad, head of police operations, was quoted as saying by NRK radio.
Early Saturday's shooting targeted a nightclub named London Pub in the capital Oslo.
NRK reported there were three crime scenes but it was not clear if they were three different locations.
"There were more and more and more shots, so I escaped into the inner bar and tried to get as many as possible with me," a witness said to local media.
Another witness said there were 10 maybe 20 shots, "then people started running."
Oslo University Hospital had received six injured people, whose condition was unknown, a hospital spokeswoman told TV2.
Olav Roenneberg, a journalist from Norwegian public broadcaster NRK, said he witnessed the shooting.
“I saw a man arrive at the site with a bag. He picked up a weapon and started shooting,” Roenneberg told NRK. “First I thought it was an air gun. Then the glass of the bar next door was shattered and I understood I had to run for cover.”
Norway experienced one of the worst mass shootings in Europe in 2011 when a right-wing extremist killed 69 people on the island of Utoya after setting off a bomb in Oslo that left eight dead.
In 2019, another right-wing extremist killed his stepsister and then opened fire in a mosque but was overpowered before anyone there was injured.