Grooming probes potentially dropped due to 'human error'

A major review to unearth failures to tackle grooming gangs has found that potential human error led to some police investigations being dropped.

The review - named Operation Beaconport - is looking into cases between 1 January 2010 and 31 March this year. Thousands of cases are expected to come under scrutiny.

So far, 1,273 files from 23 police forces have been referred to the review, led by the National Crime Agency (NCA), of which 236 are being examined as a priority because they involve allegations of rape. NCA deputy director Nigel Leary said initial reviews suggest there were mistakes in some investigations.

He said: "Initial reviews have identified that in some cases where there has been a decision to take no further action (NFA), there were available lines of inquiry that could have been pursued. "We've seen in those cases what appears to be potentially human error." Mr Leary said that in some cases the inquiries haven't followed what the NCA would characterise as "proper investigative practice".

"That includes, for example, lines of inquiry being identified but not being followed, victim accounts not being taken in a way that we would recognise as best practice, and suspects not being pursued or interviewed in the ways that we would anticipate," he said. Read more from Sky News:Hull grooming gangs investigation reopenedOfficers taken off Hull grooming gangs investigation Last month, the Metropolitan Police announced officers were reviewing 9,000 cases of child sexual exploitation.

It is expected that some of these will be referred to Operation Beaconport, which is looking at cases involving two or more suspects, more than one victim, contact offences, where the suspects are still alive, and that have not already been independently reviewed. The investigation into grooming gangs and other non-familial sexual abuse in Rotherham between 1997 and 2013, Operation Stovewood, has cost £89m over 11 years.

It is not clear how much the latest investigation will cost. However, Mr Leary said it would be the "most comprehensive investigation of its type in UK history.