China is launching an investigation into a group of police officials over their handling of an attack on female diners at a restaurant, an incident that prompted an outpouring of stories from women around the Asian nation who said they’d been badly mistreated in the past.

Ma Aijun, the police chief of the district in the northern city of Tangshan where incident occurred earlier this month, along with four other officers was being probed for "severe disciplinary violations,” China Central Television reported Tuesday, citing the anti-graft agency in Hebei province.

The report used a Communist Party euphemism that can mean corruption is involved but can also cover issues such as dereliction of duty. The state broadcaster said separately that Ma’s deputy has been relieved of duty for "improper” law enforcement, citing police officials in Hebei. That story didn’t provide the deputy’s full name.