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In the decision released today, Parole Board panel convenor Judge Eddie Paul said under "trying circumstances" Vincent's lawyer had made a "tentative submission" for the 81-year-old's release.
"This Board is concerned that really no formal release proposal to [withheld] has been presented," Paul said.
"We would expect as a minimum there would be a multidisciplinary meeting including his GP in the prison, [withheld], intending to really set out and determine this man's needs."
Certainly, any proposed hospital care provider would need to attend that meeting so they are "fully aware of the various features" Vincent presents, Paul said.
"It is very clear from the reports we have that he is continuing to focus on inappropriate sexualised behaviour," he said.
"That presents risks for not only himself but any other patients of any facility he should be referred to."
Paul invited Corrections and other professionals to prepare a "robust release proposal" addressing all the documented concerns for Vincent's next hearing in August.
"Obviously, he is not a candidate for parole today."