The government is “gripping” the prisons crisis, minister Lisa Nandy told Sky News, as she said it is “unacceptable” the number of prisoners being wrongly released has risen.

Ms Nandy, the culture secretary, told Sunday Morning With Trevor Phillips that Justice Secretary David Lammy has made a senior appointment “to make sure we really grip this” after it was revealed this week two prisoners had been mistakenly released.

She said the number of wrongful releases had gone up under the current government, from 17 a month under the Conservatives, to 22, but added that it was “completely unacceptable”.

Algerian sex offender Brahim Kaddour-Cherif was recaptured on Friday, with his arrest witnessed by Sky News, while Billy Smith handed himself in.

Days before Kaddour-Cherif’s release, Mr Lammy had promised to implement further checks on prisoner releases after migrant sex offender Hadush Kebatu was earlier released by mistake.

Regarding wrongful prisoner releases, Ms Nandy said: “Even one is too many, and the justice secretary is gripping this by appointing Dame Lynne Owens, who is the former director of the National Crime Agency, to make sure that we really grip this.”

She said that will begin with looking at the “antiquated” paper-based system still being used, but also by building new prisons and more checks to prevent prisoners from being wrongly released.

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