Two people have been killed and 14 injured in a shooting at a nightclub in the Norwegian capital, Oslo.
People were shot at various places in and around the London Pub, a popular gay bar and nightclub in the city center.
According to public broadcaster NRK, there are at least three crime scenes.
Police said the suspect was arrested on a nearby street minutes later.
The motive of the shooter is unclear.
NRK journalist Olav Roenneberg said: “I saw a man arrive with a bag, grabbed a gun and started firing.”
Oslo will hold its annual Pride Parade later on Saturday.