China has banned 11 million people from leaving the city of Shijiazhuang, the capital of Hebei province in the country's north. The ban came into effect Thursday.
Over 100 new cases were reported Wednesday in the province, which neighbors China's capital Beijing.
At a press conference Thursday, Meng Xianghong, deputy mayor of Shijiazhuang, announced a ban on outbound travel for all people and vehicles in the city, except for emergencies.
Gaocheng district in Shijiazhuang had been declared a high-risk area on Wednesday.
As of noon on Thursday, samples had been collected from a total of 6,109,685 people for mass testing in the city.
Shijiazhuang reported 50 confirmed cases and 67 asymptomatic cases on Wednesday, according to a Thursday update.