China reported 57 new cases of coronavirus on Sunday, the highest daily number since April as concerns about a recurrence of the disease increase.
The domestic outbreak in China had been largely brought under control by severe barriers imposed earlier this year – but a new outbreak has been linked to a meat and vegetable market in South Beijing.
The National Health Commission said 36 of the new cases were domestic infections in the capital.
The other two domestic infections reported on Sunday were in northeastern Liaoning Province, and local health officials said they had close contacts with the Beijing cases.
The new group of home infections has led to renewed bans as people have been instructed to stay at home in 11 housing estates near the market.
The cases are the first in Beijing in two months.
AFP reporters saw hundreds of police officers, many of whom were wearing masks and gloves, and dozens of paramilitary police officers stationed in the market.
The new cases have raised concerns about the security of the food supply chain, and several other markets in the city have also been closed.
Beijing's market surveillance authorities ordered a city-wide food safety inspection focused on fresh and frozen meat, poultry and fish in supermarkets, warehouses and catering services.
Nine nearby schools and kindergartens have been closed, and Beijing has delayed students' return to primary school.
Sports events, group meals and cross-provincial tour groups were also discontinued.
The rest of the cases reported on Sunday were brought into the country by Chinese nationals who returned home overseas.
(Except for the headline, this story was not edited by NDTV staff and published from a syndicated feed.)