The report is important because for decades until 2006, including during all of the pontificate of Pope John Paul, the Vatican dismissed accusations by seminarians that Maciel had abused them sexually, some when they were as young as 12.

The order said the report, which was released on Saturday and covers the period since Maciel founded it in his native Mexico in 1941 to this year, was "an additional attempt (by the Legionaries) to confront their history".

Maciel, who died in 2008, was perhaps the Roman Catholic Church's most notorious pedophile, even abusing children he had fathered secretly with at least two women while living a double life and being feted by the Vatican and Church conservatives.