Passersby rushed to help emergency services save priceless paintings and other valuables as a fire raged through one of Copenhagen's oldest buildings on Tuesday.

Thousands of people spontaneously break into the Danish national anthem outside Christianborg Palace after Prime Minister Mette Frederiksen proclaims the new king.

Copenhagen's chief police inspector said there was no indication that anyone helped the gunman, identified as a 22-year-old Dane.