A Ryanair flight from Norway to Manchester was evacuated before take-off due to "suspicious behaviour" of two passengers, police have said.
Norwegian police spokesman Anders Stroemsaether told public broadcaster NRK that the incident at Rygge airport, near Oslo, happened during boarding when the two passengers were overheard arguing in an airport toilet.
He said other passengers heard the word "bomb" being used and told the captain as they boarded the aircraft.
The captain informed police who evacuated the plane and took the two passengers in for questioning.
A bomb squad searched the aircraft but found nothing suspicious.
Police said on Twitter that the two passengers were discharged after being interviewed.
"After questioning of witnesses and those brought in, the police have concluded that the situation is a result of a misunderstanding," police said.
Ryanair put on a replacement flight from Rygge to Manchester at midnight on Sunday.
The incident came just hours after a fake bomb was found at Manchester United's football stadium , prompting police to call off a Premier League match.
Police later said it was a training device that was left inside the stadium following an earlier security exercise.