Mr Flynn is charged with the robbery of €7,000 in cash and assorted cheques at Lordship Credit Union on January 25th, 2013.
He is further charged with the conspiracy to commit burglaries, with two other men, including Aaron Brady, between September 11th, 2012 and January 23rd, 2013.
Mr Brady of New Road, Crossmaglen, Co. Armagh was previously found guilty of the capital murder of Detective Garda Donohoe and was sentenced to life imprisonment.
Detective Garda Gareth Kenna of Dundalk Garda Station told today’s hearing that Mr Flynn’s reply to the credit union robbery charge was: “I strongly deny the charge. I was not present in the car park on January 25th; I’m a businessman who was running a successful business in the USA since 2011.”
He responded to the second charge under caution: “I strongly deny that charge.”
Mr Flynn, dressed in a light blue shirt, navy jeans and grey runners, was served with a book of evidence in two thick ring-binder folders.
Judge Kelly granted an order for Mr Flynn to be sent forward for trial on both charges to the Special Criminal Court.
The judge then remanded him in custody until his appearance before the non-jury court, which is expected to take place within the next two weeks.
Defence counsel John Temple said his client “has no occupation and has no income” and made an application for legal aid.
Judge Kelly remarked that “there are extraordinary sums [of money] available as recently as last December,” and he deferred ruling on the legal aid application, which the trial court will now decide.
Mr Flynn waved to family members in the public gallery as he was escorted from the courtroom.