The flight took place on Wednesday night.
An Irishman, in his late 20s, has been arrested in Norway after being caught smoking in an aeroplane toilet.
The incident occurred on an SAS flight from Oslo to Tromsø.
Norwegian newspaper VG have reported that officers said the man also appeared to be drunk upon arrival. The flight landed slightly before 11pm.
The man, who was reported to have been travelling to Norway for a holiday, was detained at Tromso airport in the north of the country and since then, he has been transferred to to a hotel in the city and can expect a fine.
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