Northeast China's Heilongjiang Province has reported 20 asymptomatic COVID-19 cases from Saturday to 10:00 a.m. on Monday, according to local officials.

All of the new cases were detected in Suihua City in an epidemiological investigation launched after a positive case was reported on Saturday. A total of 2,848 people have been tested and besides the 20 asymptomatic cases, all other results have returned negative.