Speaking at a press screening of the Oscar-nominated documentary on the former priest, Cork woman Maria Jyono, whose daughter Ann was raped by O'Grady when she was five years old, said O'Grady had never shown any remorse towards his victims.

"This man needs to be constantly monitored because he is a risk to children everywhere, " said Jyono. "It is a big problem and it can't keep happening. I know firsthand what he does to kids. More people have to come out and do something about it."

Limerick-born O'Grady, a former priest in California, was convicted in 1993 of abusing 23 children, the youngest of whom is believed to have been just nine months old.

He served seven years in prison before being deported to Ireland in 2000. He is currently believed to be living in Dublin.

In Deliver Us From Evil, directed by CNN reporter Amy Berg, O'Grady is filmed walking around Merrion Square as he speaks candidly about the children he abused.

"We were filming near a school at one point, and at recess, all the kids came running out to the playground and we saw the look on his face, " said Berg. "He was paralysed by the sight and we were all very uncomfortable with it."

O'Grady cut off contact with Berg shortly after filming the documentary.

"It was incredibly painful for us to watch [the documentary], " said Jyono, who was born in Cork. The Jyono family were close friends with O'Grady for 22 years before they discovered he had abused their daughter. "It's difficult because every time we watch it, we relive it all over again. But we know this has to get out there and if it can help other families, it's worth it."