A man, in his 50s, was flying the drone Wednesday evening in a restricted area, but it did not affect air traffic, Lisa Mari Lokke, head of prosecutions at Norway's eastern police district, told AFP.

He was not arrested but will be questioned by police, she added, declining to specify the man's nationality.

"Yesterday around 9:00 pm (1900 GMT) police were informed that a drone had entered the no-fly zone of Oslo airport," Lokke said.

"When we arrived at the site, we found a man in his fifties piloting the drone," she said, adding that police then landed and seized the device.

The incident came after reports of drone sightings forced temporary shutdowns at Scandinavian airports this week, including in Copenhagen and Oslo.

But Lokke said that "At this stage, we see no connection" between these incidents.

Overnight Monday to Tuesday, air traffic at the Oslo airport was suspended for about three hours after a possible drone sighting was reported.

Lokke said lights had been seen in the air and an investigation was underway to determine whether it had been a drone.