Another inmate has been incorrectly released from Risdon Prison, with the Justice Department again attributing blame to an administrative error.
The prisoner was incorrectly released on Friday, but was returned to the prison on Saturday morning without incident.
The department did not answer questions about how early the prisoner was released or how much of the imposed sentence had been served.
A department spokesman said a review of the incident was underway to identify deficiencies in processes and methods to mitigate risk of further human error.
"A prisoner was incorrectly released due to a human error in record-keeping," the spokesman said
In November, The Examiner revealed prisoner Josh Brown had been released from Risdon 28 days before the end of his sentence.
Brown was arrested two days before his actual release date and returned to jail.
Including the latest botched release, there are nine known inmates who've left Risdon before or after their actual release dates in the past four years.
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Attorney-General Elise Archer said any incorrect release was unacceptable.
"We are doing everything we can to prevent them from occurring," she said.
A KPMG report released in 2017 recommended the department streamline court processes and implement a single registry for all courts, which is now underway.
The state government's Justice Connect ICT program will centralise systems between the department, courts, police and corrective services.
"This incorrect release demonstrates the importance of the government's $24.5 million investment in Justice Connect, a project which will deliver a much-needed technology solution and significantly enhance information transfer," the spokesman said.
The prisoner was released less than a week after Jake Mark Pearce escaped police custody at the Royal Hobart Hospital.
Police took Mr Pearce to the hospital after arresting him at Bridgewater, at which time he managed to flee.