The Dáil Committee on Procedure and Privileges has sought more information from the Public Accounts Committee who is seeking to compel former Rehab executives Frank Flannery and Angela Kerins to give evidence before it.

The Public Accounts Committee had sought the powers to make the pair appear as part of its investigation into the charity.

The Committee on Procedure and Privileges, which rules on the procedures to be followed by Dáil committees, said it needed more information to determine whether the issues concerned were lawfully within the remit of the PAC.

The Committee sent a similar letter in relation to an earlier request to compel trade union official Matt Merrigan, who was at the centre of the PAC's enquiries last year into spending from a fund aimed at encouraging social partnership