Beijing reported four new locally transmitted COVID-19 cases between 4 p.m. Monday and 4 p.m. Tuesday, local health authorities have said.

All four cases were detected in people under quarantine, according to the municipal publicity department.

By 4 p.m. Tuesday, Beijing had reported a total of 112 cases of the novel  coronavirus since Jan. 15. Among the cases, six are the Omicron variant and 106, including 93 confirmed cases and 13 asymptomatic cases, are the  Delta variant.