The extension is due to a surge in COVID-19 cases in the city.

Due to a surge in COVID-19 cases in the city, Hong Kong has extended its travel ban on non-citizens and is continuing to suspend all transit flights “until further notice.” Quarantine measures will remain in place. As of April 6, Hong Kong reported 915 coronavirus cases, which the government said has doubled compared to the previous week.

Initially, the measures were set in place for 14 days and were slated to end on April 7, but they will now be extended indefinitely.

These measures dictate that all non-Hong Kong residents returning from aboard by plane will be banned from entering Hong Kong, while non-Hong Kong residents coming from mainland China, Macau, and Taiwan will also be barred from entering if they have been to any overseas countries or regions in the past 14 days.

All travelers from mainland China, Macau, and Taiwan, including both Hong Kong and non-Hong Kong residents, will also have to undergo a mandatory 14-day quarantine.

Meanwhile, Hong Kong International Airport has utilized several self-driving robots to clean public areas as part of its COVID-19 measures. Equipped with both a UV light sterilizer and an air sterilizer to kill germs, these robots each come with a head that can spin 360 degrees to spray disinfectant and a body that is lined with ultra-violet light bulbs.

The airport said that the robots can” sterilize up to 99.99 percent of bacteria and virus in the air and on object surfaces” in just 10 minutes.