A gunman opened fire inside a busy shopping mall in the Danish capital on Sunday, killing several people and wounding several others, police said.

A 22-year-old Danish man was arrested after the shooting, Copenhagen police inspector Søren Thomassen told reporters, adding there was no indication that anyone else was involved, though police were still investigating.

Several dead in Copenhagen mall shooting; suspect arrested

Several people shot at a Copenhagen shopping mall, say Danish police

3 killed in shooting inside shopping mall in Copenhagen, gunman arrested

3 dead after shooting at shopping mall in Copenhagen; one arrested

3 Dead In Copenhagen Mall Shooting, Cops Checking Terror Angle