The Tribunal is investigating an Athlone Garda's complaint that he was mistreated by senior Gardaí.
The Disclosures Tribunal will decide tomorrow if it will drop a whistleblower's allegation that former Garda Commissioner Nóirín O'Sullivan was involved in an instruction to "alienate" him.
The Tribunal is investigating Athlone Garda Nicholas Keogh's complaint that he was mistreated by senior Gardaí after making a protected disclosure about alleged wrongdoing in the force.
Garda Keogh alleges then Commissioner Noirin O'Sullivan phoned Superintendent Patrick Murray in April 2015.
He told the Tribunal that he was advised that Superintendent Murray told other guards in Athlone to "pull away from" and "alienate" him.
Noirin O Sullivan stated to the tribunal that the call never took place and the allegation is "completely untrue and without foundation.".
Superintendent Murray told the tribunal he had never spoken to Commissioner O'Sullivan about Garda Keogh and never suggested to anyone that they should pull away from or alienate him.
Garda Keogh told the Tribunal he has no direct evidence, other than saying that guards told him, but he wasn't willing to name them for fear they'd be targeted.
An application to drop the allegation from the Tribunal's work, which is investigating whether Garda Keogh was mistreated after making a protected disclosure alleging collusion between a Garda and an Athlone drug dealer, will be heard tomorrow.
Engineering Works To Disrupt Midlands Rail Services Tomorrow Evening
HIQA Finds Midlands Hospital Non-Compliant Over Radiation Incident Reporting
Split Decision Issued For Midlands Solar Farm
Status Yellow Wind And Rain Warning In Effect This Morning
Midlands Sisters Seriously Injured In M9 Crash Issue Update
Primary School Councilling Sessions Likely To Be Rolled Out In Deis Schools
Urgent Call For Progress On Proposed 20-Bed Midlands Hospice In Offaly
Laois Village Aiming For Major Parish Hall Redevelopment