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
A couple have got married for the second time after the bride forgot their first big day following a car crash.
Sir Bruce Forsyth, Sir Cliff Richard and the Prime Minister have been among those paying tribute to Cilla Black following news of her death.
TV favourite Cilla Black, who has died aged 72, gave viewers a "lorra, lorra laughs" during her long career.