The Dundalk man was questioned by Irish police almost a year after the bombing.
His comments followed the murder of an Irish police officer during a robbery in Dundalk on Friday.
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Ch Supt Breen and Supt Buchanan were killed only minutes after leaving a meeting in Dundalk Garda Station.
Detective Garda Adrian Donohoe, 41, was shot dead during a robbery at a credit union in Bellurgan, near Dundalk.
The movie was mostly shot around Belfast, but some scenes were filmed in Dundalk in the Republic of Ireland.
Brown will move to New Grosvenor from his current job as technical advisor to League of Ireland side Dundalk.
Detective Adrian Donohoe was shot dead during a robbery at a credit union in Bellurgan, near Dundalk, on 25 January.
The day after the murders, Ned O'Dea, then the assistant Garda commissioner, was sent to Dundalk to conduct an enquiry.
"The investigation was to establish the arrangements and circumstances of the meeting of the RUC officers at Dundalk Garda Station" he said.
He said that on the day of the bomb he had taken his son on a quad bike into the mountains outside Dundalk.
"They are a great club and I agreed to talk to them even though I had a good job at Dundalk, " said Brown.
Chief Supt Harry Breen and Supt Bob Buchanan died in an ambush in south Armagh shortly after they left a meeting at Dundalk garda station.
The 41-year-old was given a state funeral in Dundalk, which was attended by thousands of people, including leading politicians from both sides of the Irish border.
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The tribunal also heard that a Garda intelligence document exists that outlines when it was known the two RUC officers were travelling to Dundalk Garda Station.
He is to consult Mr Ahern on the peace process before travelling to the Irish border town of Dundalk, where he plans to make an outdoor speech.
Williams returned to Scotland to join Ross County before returning to Clyde then Ayr United before spells in the Republic of Ireland with Dundalk and St Patrick's Athletic.
Colm Murphy, from Dundalk, and Seamus Daly, from County Monaghan, are defending an action by relatives of some of the 29 people killed in the Real IRA attack.
Mr Berger said that although the Dundalk area, just south of the Northern Ireland border, had been badly affected by the Troubles, it was currently "a model of economic regeneration".
Mr Murphy, a Dundalk-based contractor and publican, is being sued along with former employee Seamus Daly, from County Monaghan, over the atrocity that killed 29 people and injured hundreds more.
He told police in the Irish Republic who questioned him that he spent the day of the bomb quad biking with his son and then at his bar in Dundalk.
The Dundalk anecdote brought this into focus, whilst the mention of an envelope containing a cheque stirred memories of previous inquiries into corruption and the stories of Bertie Ahern's famously puzzling financial dealings.
Prison sources dismissed speculation that Maze prisoner Padraig Wilson was the go-between, and had been released from jail at the weekend for a meeting with the decommissioning body in Dundalk, in the Republic of Ireland.
Maguire was one of five men arrested after Irish police stopped two cars which had been travelling in convoy and drove up and down past a garage on the Castletown Road near Dundalk, County Louth on the morning of 8 August.
Armed with information about the role played by independent candidate Sean Gallagher in a Fianna Fail fund raising event in Dundalk in July 2008, Mr McGuinness first elicited what sounded like a denial from the candidate, then warned him he was getting into "deep trouble".
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