(Bloomberg) -- Hong Kong’s plan to further ease Covid curbs that have isolated the city and weighed on its economy could be jeopardized by people defying virus protocols, Chief Executive John Lee warned Tuesday.

“If everyone follows the rules, our road will be easier to walk,” the city leader said at a regular news briefing. “If there are too many violations, then our measures cannot easily be further relieved.”

Lee said there had been a roughly 8-9% non-compliance rate with compulsory testing orders in the past two months, adding that over the weekend action was taken against more than 1,000 people who had previously defied the protocols.  

Authorities last week vowed to crack down on fraudulent medical certificates issued for exemptions from Covid-19 vaccinations after arresting five doctors suspected of giving out such notes. Lee said authorities had found more than 20,000 fake vaccine exemption certificates.

“We are also seeing cases of people uploading fake RAT results, some with the intention to get holidays,” he added.  

Hong Kong ended hotel quarantine for inbound travelers on Monday, in the most substantial move yet to end its pandemic isolation. The city leader signaled when announcing the move last week that more easing was likely, as the city tries to salvage its status as a global financial center.

Under the new rules, people entering the city no longer need to take a PCR test before departure, with a rapid-antigen test now sufficing, though they still need to complete a PCR upon arrival. In the three days after they get to Hong Kong, travelers face restrictions on their movements, including being banned from going to bars and eating at restaurants. 

“If you don’t do this, the success of the 0+3 plan will not be as effective because there may be a rebound in cases,” he added, referring to complying with Covid testing measures. “They will affect my plan.”

(Updates with details on fake certificates.)

©2022 Bloomberg L.P.