Peter Madden of Madden & Finucane Solicitors, who act for the majority of the families and wounded said:

“Our position on this issue is very simple.

“Lord Saville’s conclusions reaffirmed the innocence of those murdered and wounded.

“There is a continuing legal obligation on the Police Service of Northern Ireland to investigate murder and the erosion of that responsibility, particularly in view of those conclusions, can never be justified.

“It is incumbent therefore on the police to pursue those responsible for the events of Bloody Sunday.

“We will meet the PSNI shortly with the families and wounded that we represent and in the absence of a reconsideration by the PSNI and a firm commitment to properly resource this murder investigation we will be left with no alternative but to challenge that decision in the High Court in Belfast.”