After the train rear-end accident on the Changping Line of the Metro, the municipal government set up an investigation team to investigate the accident. The Municipal Commission for Discipline Inspection and the Municipal Supervisory Committee launched an accountability investigation on the public officials of the units involved.

Among them, Hu Zhiqiang, general manager of the Municipal Metro Company, was given a governmental warning. The public security organs have opened an investigation into the persons responsible for the accident, and the municipal Metro Company will deal with the relevant persons in accordance with regulations.