The Independent Police Complaints Commission has started three investigations into Greater Manchester Police after allegations that "officers misled families and the public when human tissue from victims of serial killer Harold Shipman was disposed of."
The chief constable of Greater Manchester Police has said there is "huge concern" that Britons returning from Syria could pose a threat when they are back in the UK.
Speaking on BBC Radio 4's Today programme, Sir Peter Fahy said those stopped at the border would be put into "programmes" run by police and local agencies to "try and make sure they're not a threat to this country".
He said that returning UK nationals "may well be charged and investigated" as well.
Greater Manchester Police Deputy Chief Constable Ian Hopkins said:
Greater Manchester Police notes the decision of the Crown Prosecution Service to take no further action against any officer following the death of Anthony Grainger in March 2012.
The force also notes the decision of the Crown Prosecution Service to prosecute Greater Manchester Police for a breach of section 3 (1) of the Health and Safety at Work Act 1974.
Since Mr Grainger's death 22 months ago, Greater Manchester Police has co-operated fully with the Independent Police Complaints Commission, the Crown Prosecution Service and HM Coroner. Our sympathies remain with Mr Grainger's family and we deeply regret the loss that they have suffered.
Mr Grainger's family, and the officers involved, have had to wait a long time for this decision to be reached and we share the frustrations over those delays. However, we understand that it was vitally important that the investigation was carried out thoroughly to establish all the facts.
Now that a charging decision has been made regarding the force itself, it is equally important that these legal processes are allowed to take their course unimpeded in order to seek a resolution for both the family of Mr Grainger and the force.
The Independent Police Complaints Commission investigated this matter independently and we await the official publication of their report. This matter also remains the subject of a coronial inquest, so Greater Manchester Police is unable to make further comment at this time.
Greater Manchester Police Chief Constable Sir Peter Fahy is accused of failing to discharge a duty under the Health and Safety at Work Act as he is "corporation sole" for the force, the Crown Prosecution Service said.
This is a legal status and means that he does not share criminal liability or will personally have to appear in court.