Ningbo in East China's Zhejiang province on Monday reported three COVID-19 cases, said local health authorities.

The three cases were from the same family in Zhenhai district in the east of Ningbo, and all the three have been sent to a designated hospital for treatments.

Schools in Zhenhai district were closed on Monday, the local authorities said.

All the flights from Ningbo to Beijing were cancelled on Monday due to the pandemic.