DUBLIN—Ireland's next report into the cover-up of child abuse in the Catholic Church might be censored or delayed because its publication could undermine prosecutors' efforts to imprison pedophile priests, Justice Minister Dermot Ahern announced Friday.

Ahern said he wants to publish the report into three decades of abuse cases in Dublin's archdiocese "with all possible speed"—but not if this would allow priests responsible for "horrific acts of depravity" to escape justice.

A fact-finding commission spent three years gathering evidence about how bishops and other Dublin archdiocesan officials sheltered known pedophile priests from police and other child-protection authorities from 1975 to 2004. The commission delivered its findings confidentially 10 days ago to Ahern and Attorney General Paul Gallagher...

Martin told Mass-goers in an April sermon that the report's findings "will shock us all."

Over the past 15 years, Ireland has grown somewhat numb to revelations of molestation, cruelty and cover-up... guilty of shielding hundreds, if not thousands, of known abusers within their ranks.

Crimes documented included ritual beatings, rape, and lying to children that their parents were dead. The last of those church-run facilities closed in the 1990s.