A police commander has expressed profound regret that no one has yet been brought to justice for the Omagh bomb.
PSNI Deputy Chief Constable Drew Harris said he could not envisage any future prosecutions for the 1998 Real IRA outrage unless new evidence comes to light.
Mr Harris was reacting to the collapse of the case against convicted dissident republican Seamus Daly.
Daly walked free from prison after the prosecution for murdering 29 people in the Omagh attack was dramatically withdrawn on Tuesday.
Mr Harris gave his reaction as he addressed the monthly meeting of the Policing Board in Belfast. He was standing in for Chief Constable George Hamilton, who has suffered a family bereavement.
“From a police perspective this is a profoundly disappointing result and we feel very much for the families who obviously have been let down that another prosecution has, in effect, failed,” said the deputy chief constable.
“We do profoundly regret that we have been unable to secure a conviction for the Omagh bomb so long after this event and those individuals and families of those who were killed obviously deserve justice and have yet to secure it.”
He added: “We remain ready and willing to pursue new lines of inquiry should new information be forthcoming.
“As we have said before repeatedly there are people who know information about this who could come forward and could provide evidence and we would appeal to them to do so.
“This investigation is not closed, with new information it would reopen and we would pursue it with vigour. At this time there are no new lines of inquiry but without further assistance this matter is unlikely to advance any further.”