The family of Old Bailey bomber, Marian Price, are "gravely concerned" for her health after she was moved from Hydebank prison to Belfast City Hospital yesterday.
Price, who is suffering from serious depression after a year in solitary confinement, is in the Windsor House unit which treats patients with mental health issues.
Last month, a judge heard she was too ill to stand trial. Price was due to be examined by doctors from the UN in Hydebank on Monday.
Her husband,Jerry McGlinchey, said: "We are deeply worried about Marian. I've just visited her in Windsor House and she looks dreadful.
"There are prison guards on the door which is against medical advice. Doctors who saw her in Hydebank said if she was moved to hospital there should be no guards.
"Her mental health has hugely deteriorated after so long in solitary confinement and being held in jail with no release date."
Mr McGlinchey said he suspected his wife had been moved to hospital so the UN doctors due to visit her wouldn't see the conditions in which she was held in Hydebank.
In a statement, the prison service said the decision to move Price was taken on medical advice. Sinn Féin, the SDLP, and the dissident republican 32 County Sovereignty Movement – of which Price was national secretary – all called for her immediate release.
But DUP MLA Paul Givan questioned why "sufficient medical provision" wasn't available within the prison system.
Secretary of State Owen Paterson revoked Price's licence last year after she held a statement for a masked Real IRA man to read at an Easter rally. She was charged with supporting a paramilitary group but that charge has since been dropped.
Two months after her licence was revoked, she was charged with supplying a mobile phone to those who murdered two young British soldiers at Massereene. She was granted bail on that charge.