Beijing reported five new confirmed COVID-19 cases and four asymptomatic cases between 16:00 Saturday and 16:00 Sunday, local health authorities told a press conference.

There're two spread chain, linked to the Delta and Omicron variants, currently going on in the Chinese capital in the latest COVID-19 resurgence, said Pang Xinghuo, deputy head of the municipal disease prevention and control center. 

Since January 15, six cases with Omicron were discovered in Beijing and 37 cases with Delta, among which 10 remain asymptomatic yet.

Omicron cases in Beijing are largely stable for the moment while the epidemic situation of the Delta variant, which is linked to cold chain sector, is evolving, she said. 

Beijing's Fengtai District, hard hit by the resurgence, started a mass virus testing on Sunday morning and suspended all gatherings for precaution. 

And one residential area in Fengtai was listed as medium-risk for COVID-19, authorities said on Sunday.