An Irish man convicted of trying to purchase weapons and explosives for the Real IRA was released in Lithuania yesterday after an appeals court overturned an earlier ruling.
Michael Campbell, who has been in prison since his 2008 arrest, smiled as police took off his handcuffs and freed him in court in the capital, Vilnius.
"I am very happy," Campbell, 41, told reporters, adding that he planned to return to Ireland. "I will go as soon as possible."
Campbell, the younger brother of alleged Real IRA founder Liam Campbell, was arrested as part of an international sting operation that included undercover British agents as he tried to purchase guns and explosives in the Baltic state.
A lower court sentenced him to 12 years in prison in 2011.
The Vilnius Appeals Court said prosecutors failed to prove ties with the Real IRA and suggested that Campbell was the victim of entrapment.
"There was no direct evidence proving Campbell's ties with Real IRA. He was never arrested by British or Irish authorities for terrorism-linked activities," judge Viktoras Kazys said.
"The prosecution did not provide enough evidence to deny statements that Campbell's actions were provoked by undercover MI5 agents.
"It was impossible to comprehensively explore the case when British and Irish institutions refused to cooperate with Lithuanian courts and prosecutors."
Campbell's lawyer, Ingrida Botyriene, escorted Campbell to the Irish embassy after his release.
"A person cannot be sentenced for a crime committed by state officials," she said. "The court defended the basic principle that the state cannot create a crime and then convict a person for it."
She added: "We will be discussing possibilities to demand compensation for my client."
Two years ago, a Lithuanian court found Michael Campbell guilty of trying to buy weapons and explosives after a six-year sting operation - in a case that drew attention to a hardcore Irish Republican Army splinter group's plans to spread terror to London.
According to Lithuanian prosecutors, video footage and intercepted communications showed that Campbell had paid about €6,000 (HK$63,000) for high-grade explosives, grenade launchers, detonators, AK-47s and a special assassin's rifle to Lithuanian agents posing as arms dealers.
In an audio recording, Campbell was heard discussing how easy it would be with the type of equipment on offer to plant a bomb in London and escape.
He was given prison sentences of five years for weapons possession, six years for attempting to smuggle weaponry and explosives and 12 years for supporting a terrorist group.
However, the judge at that trial said the sentences on the weapons charges would be cancelled since no harm was caused and Campbell didn't have prior convictions for similar offences.
It was not clear if prosecutors could appeal yesterday's decision by the appeals court.
Additional reporting by Agence France-Presse