- 4 updates
The Independent Police Complaints Commission are investigating whether Essex Police failed to safeguard potential victims of child abuse.
Other allegations they are looking at include delays in child abuse investigations and arresting suspects, and a failure to refer cases to the Crown Prosecution Service.
The IPCC is already investigating the conduct of five police officers in the north Essex force in two separate referrals.
One investigation centres on an Essex police officer fraudulently signing an alleged victim's statement.
A second relates to Essex Police's response to reports a girl was the alleged victim of child sex exploitation.
Essex Police has suspended one police officer after uncovering problems with child abuse investigations.
Deputy Chief Constable Derek Benson said 11 other officers have also been put on restrictive duties.
The cases relate to 59 alleged victims of child abuse, including some very young children, and very serious crimes including rape.
Mr Benson said there was a combination of recent and historic cases, some dating back to the late 1960s.
Essex Police have teamed up with children's charities to ensure they have the expert advice they need to deal with child abuse cases.
It comes after the force apologised for "inconsistencies" in 30 child abuse investigations.
Chief Constable Stephen Kavanagh said victims families had been contacted.
He added: "I was very disappointed to learn of this and you can be assured I am determined to find out what has happened and rectify those issues to ensure they do not occur again, not least for the victims of these crimes."
Barnardo’s, the Children's Society and the NSPCC will work with police to form a part of a new Child Abuse Advisory Group.
The matters have been referred to the Independent Police Complaints Commission and any individuals found to have failed in their duties will be held to account.
Anyone with concerns about a child abuse investigation should call 01245 282 103.
Essex Police have apologised to alleged victims of child abuse after "uncovering problems with the effectiveness of 30 investigations".