Passengers from three other diverted Ryanair planes accepted an offer of bus transport to France when fog shut down the Beauvais airport, 225 miles away.
But the mostly French tourists returning from Morocco on a fourth Ryanair plane refused to leave when it landed about midnight in Liege.
A spokesman for the Liege Airport, said the situation was tense and some passengers "were very aggressive, very rude."
He said passengers finally left the plane at the request of police.
Were they told of the diversion earlier? Sounds like a communication problem, combined with tired and emotional pax (and crew?)
Potentially dangerous...