German carrier Deutsche Lufthansa AG said Tuesday a strike by their check-in crew at Charles de Gaulle airport in Paris, France has forced cancellations on another 60 flights to and from the City of Light.

According to an AP report, the union representing the less than 100 ground crew members is ongoing and Lufthansa is hoping to resolve the issue as soon as possible. The airline is not sure yet whether flights to and from Paris will resume in the coming days.

Lufthansa cancelled 26 flights Monday to Charles de Gaulle and about the same amount of departures due to the strike.