The Policing Board is to appoint a panel of independent experts to carry out a review of the police investigation into the Omagh bomb.
Some relatives want a cross-border public inquiry
News of the move comes despite opposition from relatives of some of the 29 people who died in the atrocity.
They want to see a cross-border public inquiry established.
But Sir Desmond Rea, the board's chairman, said its review was necessary to hold officers to account for their actions.
The review will look at a range of issues, including whether there is enough evidence for further prosecutions to be brought.
It will also examine the trial judge's criticism of two police witnesses accused of lying in court.
In December, south Armagh man Sean Hoey was cleared of the murders of all those killed in the Omagh bomb.
The 38-year-old was found not guilty of a total of 58 charges, including those not directly linked to the bombing.