The Transport Department today said it is looking into an incidient involving four New Territories green minibus routes which had since May 19 been charging passengers fares higher than its approved effective fares, with the differential ranging from $0.3 to $1 per trip.

The routes concerned are No. 501A, 501C, 501K and 501S operated by Fully Mint.

The department expressed concern about the incident and considers it unacceptable. It is following up on the incident and has instructed the green minibus operator and relevant Stored Value Facility operators to conduct thorough investigations and submit a report.

The four routes have resumed charging at their original fares since their first departures today.

The department has also demanded - and the green minibus operator has agreed - to arrange for a full refund of the overcharged fares to the affected passengers.

The green minibus operator and relevant Stored Value Facility operators will inform the affected passengers of the refund arrangements as soon as possible and provide necessary facilitation.

The department will follow up and monitor the refund arrangements.