The second preliminary hearing in the inquiry into the murder of loyalist leader Billy Wright is set to take place later in Belfast.
Billy Wright was murdered in the Maze Prison in December 1997
Wright, 37, was shot dead by three INLA prisoners in the Maze Prison on 27 December 1997.
The first preliminary hearing was held in June, with public hearings expected to start next spring.
Inquiry chairman Lord MacLean said it would be held under the terms of the Inquiries Act, not the Prisons Act.
After June's hearing, concerns were raised about the Inquiries Act and Wright's father David said he was considering whether to cooperate with the inquiry.
At Tuesday's meeting, Lord MacLean will set out what work the inquiry has been undertaking, advise those present of progress to date and explain what further work is necessary before hearings commence.
Mr Wright has campaigned for an inquiry into his son's death after allegations of collusion by the authorities in the murder.
Wright had just got into a prison van to be taken to the visitors' area of the jail, when the prisoners from the INLA - a republican paramilitary organisation - climbed over the roof of the H-block and into the prison yard.
One opened the van door, singled out the LVF leader and shot him several times.
Former Northern Ireland Secretary Paul Murphy announced the public inquiry in November 2004.
Lord MacLean is joined on the inquiry by academic professor Andrew Coyle from the University of London and the former Bishop of Hereford, the Reverend John Oliver.