A judge has ordered Pat Hickey's release from prison on the grounds of his health.
Mr Hickey is scheduled to be released from Bangu Prison and he is expected to be placed under house arrest.
In court documents, seen by Independent.ie, his lawyers argued that there is no evidence against him aside from "generic accusations or presumptions against him".
They said his release will not present any risk to public order or to criminal law being applied.
Lawyers claim that his health state is a reason to release him and to put him under house arrest.
Judge Fernando Antonio de Almeida cited Mr Hickey's "critical health" before recommending house arrest.
He also said that preventive imprisonment can only be applied when the maximum sentence for a crime exceeds four years.
"Considering all this I revoke the preventive prison order and now he has cautionary measures replacing his detention."
Mr Hicjey can't leave the country and his passports remain with the relevant authority.
Mr Hickey temporarily stood down as OCI president after his arrest at the Windsor Marapendi on August 17.