The family of Belfast solicitor Pat Finucane has called for the secretary of state to inform them about the contents of a judge's reports on his 1989 murder.
Judge Cory has had unprecedented access to files
The move came after a BBC report which said that retired Canadian judge Peter Cory has recommended public inquiries into a number of Northern Ireland's most controversial killings in which there are allegations of collusion.
It is also understood that Judge Cory has asked the Irish Government to hold an inquiry into the murders of two senior RUC officers, Harry Breen and Bob Buchanan.
The British Government is still considering the legal and security implications of publishing the judge's findings.
Judge Cory has given the government four reports covering the murders of the solicitors Pat Finucane and Rosemary Nelson, the loyalist leader Billy Wright and the Portadown man Robert Hamill.
Sources said those reports have recommended inquiries into all four cases, and inquiries with the legal authority to summon witnesses.
Solicitors representing the Finucane family have asked Secretary of State Paul Murphy to explain why Judge Cory's report has not been made public.
Belfast-based firm Madden and Finucane called for Mr Murphy to tell them when he would inform the family of the report's findings and whether its recommendations would be implemented.
The solicitors reiterated that anything less than a full public judicial inquiry into Mr Finucane's murder would "not be acceptable".
The government is still considering its next steps: when to publish, how to respond to the judge's recommendations for inquiries and whether it needs to inform some of those named in the reports.
BBC Northern Ireland's security editor Brian Rowan said: "In negotiations at Weston Park a couple of years ago, the government said it would implement the decisions of the international judge, but will it opt for four separate public inquiries or will it seek another approach?
"We don't yet have the answers to those questions."
The Irish Government also has two reports from Judge Cory into the murders on the border of the two senior RUC officers and Lord Justice Gibson and his wife.
Early speculation suggested that the judge had asked for two inquiries in the Irish Republic, but sources now say he has recommended one and this is understood to be into the murders of the two RUC officers.