The veteran republican activist, Marian Price, has been charged by police investigating a dissident republican rally in Derry on Easter Monday.
The 57-year-old was the main speaker at a 32 County Sovereignty Movement Rally in Derry three weeks ago.
The group is considered to be the political wing of the Real IRA, and during the rally a masked paramilitary said dissident republicans planned to murder more police officers.
Ms Price was arrested at her home in west Belfast on Friday under terrorism legislation, and has been charged with encouraging support for a proscribed organisation.
She and her sister Dolours and the Stormont Sinn Féin Junior Minister Gerry Kelly were amongst those convicted of a IRA bomb attack on the Old Bailey in London in 1973.
Separately, a man and a woman in their 20s who were arrested in a police operation in Co Armagh this weekend are due in court tomorrow to face a similar charge.
