Transport authorities have asked the railway operator to improve services to accommodate an influx of mainland visitors travelling to Hong Kong, a day after crowds of tourists flooded Lok Ma Chau MTR station.

The issue arose after the station's internet connection was overwhelmed by the number of travellers loading QR codes when entering and leaving via turnstiles during peak hours on Friday, causing longer than usual queues.

At one point, commuters were allowed to leave paid areas without having to touch out.

On Saturday, the Transport and Logistics Bureau said it was highly concerned about the situation and had requested MTR Corporation to strengthen services to ensure a "smooth and safe travel" experience for passengers.

"We will continue to monitor the situation at Lok Ma Chau station and various border control points while maintaining close contact with transport operators to make changes to our response plans in a timely manner during peak arrival and departure periods," the bureau said.

The railway firm, for its part, said it was doubling its internet capacity and would implement crowd-control measures.

Friday saw a total of 480,000 visitor arrivals as of 9pm, with more than half of them coming from the mainland.

More than 100,000 people made the crossing through Lok Ma Chau while some 94,000 came through Lo Wu.