emirates7 - Several people were killed in a shooting at a shopping centre in Copenhagen on Sunday, Reuters quoted Danish police as saying, adding they had arrested a 22-year-old Danish man and could not rule out it was an "act of terrorism".

The attack rocked Denmark at the end of an otherwise joyful week, just after it hosted the first three stages of the Tour de France cycle race, in an event that had sent thousands of cheering Danes into streets across the country.

"Denmark was hit by a cruel attack on Sunday night. Several were killed. Even more wounded. Innocent families shopping or eating out. Children, adolescents and adults," Prime Minister Mette Frederiksen said in a statement late on Sunday.

Copenhagen police said armed officers were sent to Field's mall in the capital late on Sunday afternoon after reports of a shooting, and had told people inside to stay put and await assistance. Local media footage showed groups of terrified shoppers running from the mall.