O'Brien launches new challenge to Moriarty Tribunal

Businessman Denis O'Brien is going back to court to challenge the work of the Moriarty Tribunal.

He is to seek a judicial review of the tribunal's decision to restrict his lawyers examination of a key witness.

Professor Michael Andersen is the Danish consultant brought in to help the Government award the country's second mobile phone licence.

Mr O'Brien's decision follows a ruling from the Tribunal's chairman which seeks to prohibit any examination of Mr Andersen in relation to allegations of bias on the part of the tribunal's legal team.