The Labour party's Mr Brendan Howlin has won a court challenge to a ruling by the Morris Tribunal requiring him to provide confidential information on alleged Garda corruption in Donegal.
In June, Senator Jim Higgins of Fine Gael withdrew his High Court challenge to the order directing him to discover some of his phone records and other documents.
The Morris tribunal is inquiring into complaints concerning some gardaí in the Co Donegal division.
The issues before the tribunal concerned allegations in documents received by fax by Senator Higgins on June 25th, 2000, and information received in a telephone call by Mr Howlin on the same date, to the effect that two senior gardaí "may have acted with impropriety".
Last February, the tribunal ordered both politicians to discover all documentation together with telephone records received by them between June 25th, 2000, and July 4th, 2000, which would have revealed the sources of their information.
In March, the men began a High Court challenge to the ruling. That ruling has now been overturned.