The Disclosures Tribunal has concluded its final hearings on whistleblower Sgt Maurice McCabe after around 80 days of sittings.

Mr Justice Peter Charleton said he hoped to have his report out in October. This will cover the module on the O'Higgins Commission, the alleged smear campaign and the Tusla file.

Lawyer for Sgt Maurice McCabe told the Disclosures Tribunal that allegations that former garda commissioner Martin Callinan made disparaging remarks about the sergeant to five individuals should be assessed together.

The inquiry has heard evidence from Fine Gael TD John Deasy, Comptroller and Auditor General Seamus McCarthy, solicitor Gerard Kean, RTÉ broadcaster Philip Boucher-Hayes and Fianna Fáil TD John McGuinness that Mr Callinan told them Sgt McCabe was not to be trusted, had sexual offences against him and abused his own family. 

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Mr Callinan has denied making the remarks.

Michael McDowell said the alleged conversations all took place in a relatively short space of time, between December 2013 and January 2014. 

He said they were on the same subject, to the same effect and were deeply disparaging of the sergeant. 

He said there was no suggestion of cross contamination based on any real evidence and he said it would defy common sense if they were assessed separately.

On former garda press officer Supt Dave Taylor, Mr McDowell said it was not a simple binary choice on whether his evidence was credible or not.

He said on a number of issues, he was not credible but he said there were four instances where there was evidence he had engaged in negative briefings to journalists against Sgt McCabe.

He said these were in relation to Irish Independent correspondent Paul Williams, Irish Sun reporter Eavan Murray, Irish Mail on Sunday correspondent Debbie McCann and former Irish Mirror crime correspondent Cathal McMahon. 

He said two had effectively admitted being negatively briefed while two others had pleaded privilege.

Mr McDowell said the tribunal should also look at what he said were some "formulaic denials" of negative briefing and he said that in relation to RTÉ Crime Correspondent Paul Reynolds and Ms McCann, they had accepted under cross-examination that being told the truth about Sgt McCabe was not negative briefing but that would instead involve some element of false statements or calumny.

On RTÉ broadcasts of 9 May on the then unpublished O'Higgins Commission report, he said Sgt McCabe reasonably came to the view that this reportage was on a strictly controlled basis and very few of the factual issues decided in his favour had been mentioned. 

He said the broadcasts served the interests of those who wanted to do him down.

Lawyer for Independent News & Media told the tribunal that any fair analysis of its titles showed they had fairly and comprehensively covered Sgt McCabe's activities and the perceived shortcomings in An Garda Síochána. 

Senior counsel Rossa Fanning said the coverage was overwhelmingly positive to Sgt McCabe.

He also said that Mr Williams' articles based on interviews with the woman who made the 2006 child sexual assault allegation against the sergeant, were appropriate and responsible journalism. 

Mr Fanning said the evidence of Supt Dave Taylor was vague, imprecise and unreliable. 

He said it had never been suggested that anyone in An Garda Síochána had inspired Mr Williams' visits to the D family.

On various journalistic clashes, he said a conflict between witnesses on matters not relevant to the tribunal's terms of reference did not require to be resolved by the inquiry.

Tribunal told 'striking inconsistencies' in allegations against Callinan

In today's sitting, a lawyer for Mr Callinan told the Disclosures Tribunal that the allegations made by Fianna Fáil TD John McGuinness against him contain striking inconsistencies and divergences on how he responded.

Mr McGuinness has told the inquiry of two alleged conversations on 23 and 24 January 2014 with Mr Callinan.

He has said that the former commissioner told him that whistleblower Sgt McCabe "fiddles with children" and had abused his own family and other individuals. Mr Callinan has denied making the remarks.

During closing legal submissions today, senior counsel Shane Murphy said that if the chairman of the Public Accounts Committee was aware that the commissioner was badmouthing Sgt McCabe on two occasions, one would expect him to inform government at the highest level and that never happened.

He said that what was at issue at the meeting in the car park was a sergeant attempting to bypass the structures and disciplines of An Garda Síochána.

Mr Murphy said Mr McGuinness told nobody for two years and did not act and he said there were inconsistencies in his radio interviews and his account to his party leader.

Mr Murphy also said the allegations from five individuals suggesting Mr Callinan made disparaging remarks to them about Sgt McCabe, did not corroborate each other.

The inquiry has heard evidence from Mr Deasy, Mr McCarthy, Mr Kean, Mr Boucher-Hayes as well as Mr McGuinness.

Mr Murphy said the accounts should all be considered individually and did not corroborate or support each other.

He said they were all materially different but a common feature was that nobody had come forward at the time to reveal the conversations. He said they could reflect the impact on memory of public controversy allied to the influence of rumour.

He also said the inquiry was not investigating whether Mr Callinan acted disparagingly; it was instead looking at whether he acted on the 2006 sexual allegation to discredit Sgt McCabe.

The tribunal is also examining whether former garda commissioner Nóirín O'Sullivan influenced or attempted to influence a series of RTÉ broadcasts on 9 May 2016 on an unpublished copy of the O'Higgins Commission report.

Mr Murphy said that allegation had crumbled completely during the hearings, and he said there was no evidence that Ms O'Sullivan was anywhere near the RTÉ newsroom.

He said documents demonstrated the existence of a careful operation by RTÉ to ensure the broadcasts were balanced, and all reporting was shaped carefully by Mr Reynolds.