Justice Secretary David Lammy has been accused of 'hiding an even bigger scandal' after another foreign criminal went on the run – this time by walking out of an open prison.

Police have been unable to locate violent offender Ola Abimbola who vanished from HMP Ford more than three weeks ago.

Labour has been repeatedly warned that unsuitable prisoners were being transferred to open jails, such as Ford, as ministers devised increasingly desperate measures to ease the jail overcrowding crisis.

Abimbola disappeared from the jail, near Arundel, West Sussex, on October 16 and has not been seen since.

The 36-year-old, whose nationality is unknown, was serving 21 years for offences including kidnap, GBH and possession of an offensive weapon in public.

Shadow justice secretary Robert Jenrick said: 'David Lammy is hiding an even bigger scandal, as dangerous prisoners now simply walk out of open jails.

'Labour were warned about placing high-risk inmates in open prisons, but they ignored them and these are the results.

'The whole system is in chaos under 'Calamity Lammy' and the British people are being put in danger.'

It came after Algerian sex offender Brahim Kaddour-Cherif, 24, went on the run after being mistakenly freed from HMP Wandsworth in south-west London on October 29.

Another Wandsworth prisoner, fraudster William 'Billy' Smith, 35, was also wrongly set free on Monday but handed himself into the scandal-hit jail on Thursday.

Mark Drury, of the Prison Governors' Association (PGA), warned there had been a 'sudden' rise in absconders from open prisons in recent years, adding that there is an 'increased risk to the public'.

He said that due to attempts to tackle prison overcrowding 'there are a large number of prisoners in open prisons now we would not have considered suitable two or three years ago'.

In June, the PGA blasted a new Labour scheme which allows serious criminals to be transferred to open prison after serving just two weeks behind bars.

The Prison Governors’ Association said the move would 'potentially place the public at greater risk'.

It was the first time the association had expressed concern over a series of soft justice measures introduced by then Justice Secretary Shabana Mahmood, who was promoted to Home Secretary by Keir Starmer two months ago.

Measures she introduced while at the Ministry of Justice in June allow prisoners to be transferred to open jails three years before their normal release date.

Crucially, governors will have 'only limited discretion in exceptional circumstances' to reject the transfers, the PGA said.

They also warned they would only have a two-week period to block a transfer, and that proper assessments could not be carried out in time.

PGA president Tom Wheatley said at the time: 'Without the ability to properly consider a prisoner's behaviour during those two weeks we have concerns our members will be required to take decisions that potentially place the public at greater risk.'

Other prisoners have gone missing from open jails in recent months.

Thames Valley Police reported that a 'vicious' East London drug dealer had absconded from HMP Spring Hill in Buckinghamshire last month.

Osei Kuffour, 36, had been serving 25 years for attempted murder after shooting a woman in the face.

He was arrested the next day by police.

Another inmate Anton Newell, 36, originally from Isleworth in Middlesex, absconded from the same open prison in June and it remains unclear whether he remains at large.