Seven soldiers are to be interviewed by police investigating the Bloody Sunday shootings in Northern Ireland.
In January 1972 British paratroopers opened fire and killed 13 demonstrators. Fourteen were injured and another was to die later.
Police Service of Northern Ireland (PSNI) Detective Chief Inspector Ian Harrison met victims’ families to update them on the progress of their investigation.
He said 34 military and 310 civilian witness statements have been recorded.
A spokesman said: “He also told the families that seven military witnesses would be interviewed over the coming months, along with 10 civilian witnesses.
“DCI Harrison reiterated the fact this is a long, complex and protracted investigation but that he remained committed to keeping the families informed of progress as appropriate.”
Bloody Sunday has been described as one of the catalysts of the Troubles in Northern Ireland, which left more than 3,000 dead and many others injured.
Civil rights demonstrators seeking one man one vote and other concessions from the unionist-dominated government of Northern Ireland had gathered for a march in Londonderry.