The deaths of two children in Norfolk are among eight new cases which have triggered independent reviews into what can be done to protect vulnerable youngsters.
Very little detail has been released about the children who have died, but a man is due to stand trial for manslaughter over one of the deaths.
The eight serious case reviews follow a previous eight in Norfolk published since 2014. None of those involved deaths.
Neither child who died was subject to a Norfolk County Council child protection plan.
In five of the eight new serious case reviews commissioned by the Norfolk Safeguarding Children Board, ongoing criminal proceedings mean they cannot yet be considered.
But one review is due to be discussed next month and two more are scheduled for October.
David Ashcroft, independent chairman of the Norfolk Safeguarding Children Board, said: 'Serious case reviews always take place when a child has died and abuse or neglect is suspected, whether the child was known to agencies or not.
'This is because it is important to look at what happened in detail so that we can see if there is anything that can be learnt from the tragedy, particularly for any agency or organisation that may had contact with the child or family.
'Neither of the children who sadly died in these two cases were subject to child protection plans.
'One case relates to an alleged manslaughter and the other is at the very early stages.
'As the reports have not yet been published, and the details have not been shared with the families, I am unable to give any further details at the moment.
'However, the reports will be published by the board in full at a later date.'
The eight reviews already published by the NSCB since 2014 have included criticism of organisations, including Norfolk County Council's children's services department, which was rated inadequate by Ofsted in 2013 and 2015.
A recent monitoring letter in March welcomed decisive action to speed the pace of improvement, but said the service most children and young people receive was not yet good enough.
The EDP's Fighting for their Futures campaign has been looking at issues surrounding services for children in Norfolk.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here