TEHRAN (Tasnim) Major airports in Norway and Denmark were forced to ground all flights after multiple drone sightings near runways on Monday and early on Tuesday. - Other Media news -In Denmark, police said two or three large drones were spotted around Copenhagen Airport, the busiest in the Nordic region. In Norway, Oslo Airport closed its airspace from midnight after a drone was spotted, a spokesperson for airport operator Avinor told Reuters. A police spokesperson told CNN that as of 10:15pm, no arrests had been made. Hansen said police in Denmark and Norway are cooperating to see if the incidents are connected.