It says spokesman Julius Støback in Norwegian VG.
Dreamliner aircraft took off from Oslo at 13.35 and should have landed in Thailand at 6:55 local time.
– It was a passenger who appeared violent, as did the captain considered it best to go down. The plane has landed in Warsaw, where police are waiting, says Støback.
– The aircraft was over Ukraine when they decided to turn around and go in for landing, he said.
Plane get refills with fuel in Warsaw before the scheduled flying on to Bangkok as quickly as possible, informs Støback. (© NTB)