The police watchdog says it has received a joint complaint from 22 Hillsborough families about the suspended Chief Constable of South Yorkshire Police.
David Crompton was suspended by Police and Crime Commissioner Alan Billings in April over his response to the inquests into the deaths of 96 Liverpool fans.
Watchdog the IPCC has not given details about the complaint, but says it has been referred to Mr Billings for consideration.
Dismissal proceedings for the suspended South Yorkshire chief constable David Crompton have begun, the force's police and crime commissioner has confirmed.
Mr Crompton was suspended on April 27 because of concerns about public trust and confidence in the force following verdicts in the Hillsborough inquests.
Dr Alan Billings, South Yorkshire Police and Crime Commissioner, said last month that his decision was based on "the erosion of public trust and confidence".
The force has now begun the statutory process to decide whether to call for MrCrompton to retire or resign, Dr Billings said.
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Families who lost loved ones in the Hillsborough Disaster are calling for Theresa May to send a team to conduct a 'rigorous' examination of South Yorkshire Police.
We are appalled to see the shambles in South Yorkshire Police following the Hillsborough Inquest verdict. SYP leadership have showed a lamentable refusal to face up the fact that their organization needs to take along hard look at their values and ethics.
We believe the rank and file officers in the force are being let down by their leaders. Sadly the only solution would appear to be the application of remedial measures and we have today asked Theresa May to commence the procedure to enable this.
The Home Secretary needs to send a team in to look at the force root and branch, to speak to the rank and file and see what they think is wrong in the force and what needs to be done. We believe there needs to be a rigorous and continuing examination of the ethical behavior of the force at every level.
The Force’s motto is ‘Justice with Courage’ – sadly they have shown neither.’
Deputy Chief Constable Dawn Copley, who was appointed acting chief constable of South Yorkshire Police after the suspension of David Crompton following the Hillsborough inquest findings, has "offered to step back to her substantive role" while another temporary chief constable is sought, South Yorkshire's Police and Crime Commissioner said.
It comes after news of Ms Copley being investigated over her conduct with Greater Manchester Police came to light. She was one of several officers accused of "corrupt practice" by another officer who was later sacked.
Kent Police investigated the claim but the findings are yet to be made public.
“Yesterday, I asked Deputy Chief Constable Dawn Copley to temporarily act as Chief Constable following the suspension of David Crompton.
“There has been media comment today about Mrs Copley. I would like to make clear that Mrs Copley fully declared the details of allegations into her conduct when she applied for the post of Deputy Chief Constable here at South Yorkshire Police.
“As this matter has not yet been concluded I am unable to comment publicly on the allegations and the outcome but as soon as I am able, I will do so. In the meantime Mrs Copley has my full support. However, Mrs Copley has made clear to me that she does not want any further negative publicity or criticism to be levelled at the Force. In the interests of the Force and the workforce she has therefore offered to step back to her substantive role to allow me to seek support from the College of Policing in identifying another Chief Officer from outside the Force to act as Temporary Chief Constable until a recruitment process can take place.
“Mrs Copley will need to stay in post for a very short period of time, to deal with pressing matters, but, at her request, this will be for the shortest possible period. “Events have moved very quickly over the last few days. I am sorry that I cannot say anything more definite at this time but we have been working closely with national bodies about these issues and hope to make a further announcement in the coming days.”
Families of victims of the Hillsborough disaster are pursuing legal action against South Yorkshire and West Midlands Police.
The case, pursued by families of the 96 fans who died, accuses the police of a "systematic cover up" and "abuse on an industrial scale".
This week an inquest jury delivered a finding of "unlawful killing" over the fatal incident on April 15, 1989.
On Wednesday, the Chief Constable of South Yorkshire Police David Crompton was suspended, a move welcomed by the families of Hillsborough victims.
The legal case was issued at the High Court last year but publication of the claim was prevented until after the inquest concluded.
The action, brought by law firm Saunders Law on behalf of hundreds of those affected by the disaster, is for "misfeasance in public office".
The firm said in a statement: "In addition to the police wrongdoing that caused the deaths, there is evidence of the systematic cover up intended to transfer the blame for what happened from South Yorkshire Police to the innocent, by spreading lies, doctoring evidence, pressurising witnesses and suppressing the truth.
"The evidence points to abuse on an industrial scale by both South Yorkshire and West Midlands Police, beyond any 'one bad apple' analysis.
"In addition to actions by individuals, the evidence suggests institutional misfeasance by these bodies directed against our clients and the fans generally."
The news of the action comes after it emerged retired officers from South Yorkshire Police were told to be proud of their work in the 1980s, in a message mistakenly made public on a website in the wake of the Hillsborough inquest findings.