Three people have been killed after a gunman opened fire at a shopping centre in Copenhagen on Sunday, police have confirmed.
Police in the Danish capital rushed to the Field's shopping mall after shots were fired a couple of hours before a Harry Styles concert nearby.
A 22-year-old Danish man has been arrested in connection with the incident and Danish police said they could not rule out it was an "act of terrorism". There was currently no indication that other shooters were present, police said.
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Several other people were injured in the shooting, three of them critically. Copenhagen's mayor has described the incident as "very serious". Police warned people: "If you have been to Fields, we encourage you to contact your relatives."
The capital's main hospital, Rigshospitalet, had received a "small group of patients" for treatment from the incident, possibly more than three, a spokesman said.
It had called in extra staff, including surgeons and nurses, the spokesman added.
Local media published images showing heavily armed police officers at the scene, as well as people running out of the mall. Parents could be seen grabbing onto their children and fleeing.
Footage published by tabloid Ekstra Bladet showed one person being carried by rescue workers into an ambulance on a stretcher.
British pop singer Harry Styles was due to perform at 8pm local time at a concert venue less than a mile from the shopping centre.
The concert was cancelled minutes before the show with former One Direction star writing in a statment on social media that he was "heartbroken" and "devastated for the victims".
Copenhagen Police said in a tweet: "We are still massively present in Fields and working to secure the entire building.
"If you are still in Fields, stay where you are and wait for the police."
Police earlier said: "One person has been arrested in connection with the shooting in Fields.
"We currently do not have the opportunity to tell more about the person's identity."
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