The Omagh bomb trial ended yesterday with a call to the judge to acquit the accused.
After hearing evidence for 56 days on the 56 charges against Seán Hoey, Mr Justice Weir retired to consider his verdict.
He said he had "a great deal to think about and a great deal of material to look at".
The judge said he would make his decision as quickly as possible. It is anticipated he will return verdicts in six to eight weeks.
Seán Hoey, a 37-year-old electrician from Molly Road, Jonesborough, in south Armagh, denies all the charges against him involving a campaign of bombings across Northern Ireland which culminated with the Omagh attack.
He has been accused of being the bomb-maker behind the Omagh atrocity in 1998 in which 29 people died and hundreds more were injured.
Concluding his final submission to the judge, defence counsel Orlando Pownall QC said simply: "The crown case must fail. There has to be some evidence of participation and there is, we submit, none. The crown can't prove he constructed any of these devices, particularly the Omagh bomb."
Mr Pownall said the crown had failed to prove its assertion that a single person constructed all the bombs - still less that the person was Seán Hoey.
The crown case relied heavily on DNA and fibre evidence, but Mr Pownall said the DNA was unreliable, evidence had been "beefed up" by witnesses and "important exhibits have been interfered with".
Mr Pownall told Belfast Crown Court the DNA evidence was in a "parlous state" and said there was a problem with the contamination of exhibits.
He submitted that the defence had identified the various hurdles confronting the crown case and the judge as he considered the evidence.
He concluded: "Whether it be integrity, whether it be validity, whether it be reliability, whether it be the issue of corroboration of the identity of individuals, the crown case falls below the standard required before it would be safe or appropriate to convict." - ( PA )