Lyse Doucet at the BBC:
The white bearded Reverend Good, who's been visiting this region since 2005, later told me it was a "wonderful day".
And then, the documents were passed to Ram Manikkalingam, a mediator who decided the occasion merited a suit and tie, who heads the Amsterdam-based Dialogue Advisory Group.
"There were many moments when we doubted this would happen," he admitted when we sat down in the same room after he had deposited Eta's file in the French prosecutor's office in City hall.
"There were steps forward, and steps backward," recalls Mr Manikkalingam who, as chair of the International Verification Commission, has also been monitoring Eta's unilateral ceasefire declared in 2011.
It has taken since then to convince Eta fighters to give up their weaponry without getting anything in return. Tracking down what's left also took time in a highly secretive organisation with a myriad of small cells.
More here.