A judge in Derry has dismissed charges against four people who were arrested in connection with a dissident republican rally in the city last year.

The four were detained after a masked man read a statement threatening violence against the security forces in Northern Ireland at a demonstration in Derry's City Cemetery last Easter.

Patrick McDaid, of Beechwood Avenue, Frank Quigley, of Elmwood Road; Marvin Canning, from Glendara; and Marion Price, from west Belfast; have had terrorist charges against them dropped after a court heard that inquiry papers in the case were still not ready.

District Judge Barney McElholm said everyone was entitled to a fair trial within a reasonable period of time, and refused a request for a further adjournment in proceedings.

Marion Price remains in custody, however, charged in connection with the murder of two soldiers at Massereene Barracks in Antrim in March 2009.

She was jailed in 1973 for the IRA bombing of the Old Bailey in London.

The Northern Ireland Secretary of State revoked her release from prison on licence last year.