A Beijing district official said on Saturday the district was in "wartime emergency mode" following a spike in novel coronavirus cases centered around a major wholesale market there.
Chu Junwei, an official of Beijing's Fengtai district, said at a briefing that throat swabs from 45 people, out of 517 tested at the district's Xinfadi market, had tested positive for the new coronavirus.
Beijing will suspend sports events and inter-provincial tourism, effective immediately, a city spokesman said at the same briefing.
The spokesman said all six confirmed coronavirus patients in Beijing on Friday had visited the Xinfadi market.
Concern is growing of a second wave of the new virus, even in many countries that seemed to have curbed its spread. It was first reported at a seafood market in Wuhan, the capital of central China's Hubei province, in December.
Beijing authorities had earlier halted beef and mutton trading at the Xinfadi market, alongside closures at other wholesale markets around the city.
China reported 11 new COVID-19 cases and seven asymptomatic cases for Friday, the national health authority said on Saturday. And all six locally transmitted cases were confirmed in Beijing.