Speaking after the meeting Mr McCartney said: “This meeting is a follow on from the recent visit to Maghaberry Prison where a Sinn Féin delegation met with republican prisoners in Roe House.
“Following that meeting we initiated a number of meetings including with the Justice Minister David Ford and now the Prisoner Ombudsman Tom McGonigle to discuss our growing concerns over the conditions in which prisoners are being held.
“The main issues raised with Tom McGonigle were the proposed changes to visiting arrangements, strip searches, controlled movement and prisoners being held in isolation.
“We made it clear that the regime in place at the moment is an infringement of basic human rights and cannot continue. The agreement reached in 2010 must be implemented as the mechanism to improve the situation in the prison.
“Sinn Féin will continue in our efforts to have all these issues resolved to ensure that all prisoners can be treated with dignity and respect.”