The Ryanair sued passenger who allegedly disrupted a flight from Dublin to Lanzarote, seeking €15,000 in compensation to cover costs incurred when the plane changed course and landed in Porto, Portugal.

The airline said it has filed a lawsuit in the Dublin regional court against the passenger, calling his behavior during the flight “inexcusable” and “totally unacceptable.”

According to the Guardian, the compensation of €15,000 will cover the costs incurred by passengers on the flight that changed course and landed in Porto.

Ryanair said it “will continue to take decisive action to combat unruly behaviour by passengers on board aircraft.”

The airline said the passenger’s behaviour forced the flight to land in Porto, where it remained overnight, and caused 160 passengers “unnecessary disruption as well as the loss of a full day of their holiday”.

“It is unacceptable that passengers – many of whom are leaving with family or friends to enjoy a relaxing summer holiday – are suffering unnecessary disruption and reduced holiday time as a result of the behaviour of an unruly passenger,” a Ryanair spokesman said.

The spokesman said Ryanair hoped the adjudication of the case would prevent bad behaviour on flights.

Under EU law, passengers are entitled to compensation for flights within the EU that are cancelled or delayed by three hours or more. Passengers must be offered free hotel accommodation if an overnight stay becomes necessary, as well as transport from the hotel and the airport, along with a free meal and refreshments.