BEIJING -- China's National Health Commission said Thursday that it received reports of 21 newly confirmed COVID-19 cases on the Chinese mainland Wednesday, including nine domestically transmitted cases and 12 imported ones.

The domestically transmitted cases were reported in Inner Mongolia, the commission said in its daily report.

Three new suspected cases related to the disease were reported on Wednesday, the commission said.

No new deaths related to the disease were reported.

The Chinese mainland reported 12 new imported COVID-19 cases Wednesday, bringing the total number of imported cases to 3,821.

Five new imported cases were reported in Shanghai, four in Guangdong, and one each in Jiangsu, Fujian and Sichuan, the National Health Commission said in its daily report Thursday.

Of the imported cases, 3,543 had been discharged from hospitals after recovery while 278 remained hospitalized, the commission said.