Thirteen officials in Shanghai were sacked or punished on Saturday over infections at a downtown quarantine hotel, which has been blamed for Shanghai's COVID-19 outbreak in March.

The city government released the investigation report on the central quarantine site at the Huating Hotel & Towers in Xuhui District on Saturday afternoon.

The landmark hotel was converted into an emergency quarantine site for inbound travelers on February 21. Quarantine staff at the hotel tested abnormal in nucleic acid tests from March 2.