LHASA -- Lhasa, capital of Southwest China's Tibet autonomous region, has essentially cut off the community transmission of COVID-19, local authorities said on Monday.

All new cases have been detected in high-risk areas, at designated quarantine sites, or among people under closed management, according to the office of Lhasa's leading group for fighting COVID-19.

The community spread of the virus was stopped thanks to the arduous prevention and control efforts made by local authorities since the COVID-19 resurgence began on Aug 7.

The office said the COVID-19 prevention and control situation remains complicated, and there could still be risks of hidden transmission as the city has a number of medium or high-risk areas for COVID-19.