Roisin McAliskey (35) today faces extradition proceedings over an IRA bomb attack on a British army base in Germany.
Ms McAliskey (35) was detained in Coalisland, Co Tyrone, on a European arrest warrant today and is to appear later at a court in Belfast where demands will be made to have her committed to stand trial for the mortar attack on barracks in Osnabruck in June 1996.
Ms McAliskey, whose mother is the former Mid Ulster MP and one-time Catholic rights campaigner Bernadette McAliskey, faced a similar action in 1998.
Then-home secretary Jack Straw decided at the time that she was too ill to be extradited.
She is alleged to have been a member of an IRA unit that carried out the attack.
Martin McGuinness, Sinn Féin MP for Mid Ulster, urged the German authorities to drop the proceedings. "Over 10 years ago these matters had a more than adequate hearing in a succession of British courts," he said.
"The arrest this morning of Roisín on the foot of an extradition request from German prosecutors will be seen by many as petty and vindictive."
Mr McGuinness, deputy First Minister at the new Northern Ireland power-sharing Assembly, insisted she has always maintained her innocence.