John Larkin has insisted that his suggestion of an end to prosecutions does not constitute a formal amnesty and it would aid relatives who wanted to find out the truth:
Sometimes the fact of an amnesty can be that that which was a crime ceases to be a crime. That wouldn't be the position here, it would simply be that no criminal proceedings would be possible with respect to those offences.
He implied that in the absence of legal proceedings, relatives of the dead would have a better chance of discovering what had happened to their loved ones.
"We can't really be surprised if people don't tell us as long as the theoretical threat of prosecution remains," he said.
More top news
Teams searching for the missing RAF serviceman Corrie McKeague have admitted they're running out of logical places to look for him.
Misty low cloud and some patchy fog again tonight but with mild air, temperatures where you'd expect by day rather than by night
Lincoln City and Millwall have learned their FA Cup quarter-final fate after their giantkilling antics.