SDLP leader Alasdair McDonnell has called for the release from prison of Marian Price.
The Belfast woman was arrested after she attended a dissident republican event two years ago.
With her sister Dolours, Marian Price was imprisoned for the IRA bombing of the Old Bailey in 1973.
During a campaign to be repatriated to an Irish jail, the sisters were force fed while on hunger strike. Their health suffered and they were released early.
Two years ago Marian Price was rearrested after a dissident republican Easter rally in Derry. She has been in poor health since.
Mr McDonnell said she should be released from prison and if she has a case to answer she should be brought before the courts.