The "Real IRA" has released a statement saying it would pose no threat to police and military witnesses giving evidence to the Bloody Sunday inquiry.
Claims by the security forces that their lives would be in danger from dissident republicans if they had to attend proceedings in Derry's Guildhall were a "smokescreen" aimed at stopping the truth from emerging, the group added.
The lawyers of British soldiers involved in the events of January 30th, 1972, which led to the deaths of 13 civil rights marchers, have successfully argued for their clients to give evidence in London for security reasons.
Evidence from police witnesses has been delayed by legal wrangling over applications by many to give their evidence from behind screens due to the perceived threat by dissident republicans.
The families of those killed and wounded on Bloody Sunday said it vindicated their view that no witness had ever been under threat.