Dale Cregan has been placed in solitary confinement after allegedly sneaking in drugs and a mobile phone to prison . One-eyed police murderer Dale Cregan has been placed in solitary confinement after smuggling a mobile phone and cannabis into his prison cell , it has been claimed . The 31-year-old , who was jailed for life after shooting police officers Fiona Bone and Nicola Hughes in 2012 , had been running a criminal network from HM Prison Manchester , sources said . Prison staff have come under fire for the reported security breach with critics slamming the alleged oversight as 'really embarrassing ' . Cregan is serving a life sentence after shooting dead PCs Fiona Bone and Nicola Hughes as well as father and son David and Mark Short in Manchester in 2012 . The gangster admitted the attempted murder of three others in a high profile court case the following year . He was told he would never see release after admitting to the killings which prompted public outcry and an outpouring of sympathy for the police . It is the second time he has been caught smuggling drugs into the prison , known as Strangeways , since being put behind bars . But having managed to get hold of a phone to direct illegal activity on the streets , critics are demanding his case be used to set an example . 'If the authorities can not stop dangerous criminals like this continuing their activities from the inside then the Government will have to step in , ' Tory MP Philip Davies told the Sun 's Jake Ryan . 'Dale Cregan is not the only prisoner with a phone because security is so lax and we might have to block mobile signals in prisons if it ca n't be stopped by the authorities . ' A prison source added the blunder had been 'really embarrassing ' for staff who were now under fire from bosses . 'It 's really embarrassing for the prison that one of the country 's most dangerous prisoners has got a hold of a phone and drugs again . ' The 31-year-old is serving a life sentence at HM Prison Manchester ( above ) where staff have come under fire for the reported breach . Officers Fiona Bone ( left ) and Nicola Hughes ( right ) were killed by Cregan after being lured into a house . Cregan went on the run in 2012 after murdering David Short , 46 , and his son Mark , 23 , in a bar fight . The killer , who has one eye after losing the other in a separate brawl , lured officers Bone and Hughes into a house in September 2012 . In October last year staff at the Category A prison faced questions after the murderer tested positive for cannabis in a random drug test . At the time a spokesman for the prison said : “ The availability of illicit drugs in our prisons impacts greatly on prison life and can lead to violence and intimidation of both prisoners and their family . ' Earlier this year one of the key witnesses in his case revealed she had fled the country after receiving threats from the gangster 's cronies online . The woman , who has not been named , refused to say where she was in the world but that she had been contacted by friends of Cregan threatening her life . She claimed she had been left destitute and without work after testifying for the Crown Prosecution Service . Greater Manchester Police declined to comment on her claims at the time on the grounds the force does not speak to individual cases involving witness protection . Murdered by Cregan : Mark Short ( right ) and his father David . The key witness who helped put Cregan behind bars for the killings that shocked the nation came under intense threats from gangland thugs before the trial . On the night Mark Short was shot dead , the woman saw one of Cregan 's co-accused , Damian Gorman , outside her house with two other people . Giving evidence to the trial via video link , she said she also found clothes dumped in a garden next to her home the next day . She said she faced threats after Short was killed , including one of the 'one-eyed Scotchman ' - a reference to Cregan - paying her a visit . The trial heard Gorman had told her : 'You better make sure that you keep your f****** mouth shut or you 're dead ... You see these people , what they are capable of . You 're f****** next . You and your f****** kids . ' 'He said , `` Be careful because you do n't want the one-eyed Scotchman coming to [ your ] door '' ... If I said anything to the police , ' she said . She said he pulled his finger under his chin and across his throat and told her : 'You do n't want to die and you do n't want your kids to die . ' 'He was always threatening me . The message he gave me was clear , ' she added .
Dale Cregan has been placed in solitary confinement following breach . The 31-year-old murderer smuggled cannabis and a phtwo into his cell . Was reportedly using the phtwo to organise crime on the outside . Serving a life sentence for murders of one police women and one rivals . The two-eyed gangster is being held at Category A HM Prison Manchester .