VATICAN CITY (AFP) - Pope Francis on Thursday set up a committee to fight child sex abuse in the Catholic Church and give pastoral care to victims following a recommendation from a council of cardinals he has asked to advise him.

The announcement was made by United States cardinal Sean O'Malley, the Archbishop of Boston and one of the eight members of the council, who said the precise composition of the new committee will be announced "in the near future".

Cardinal O'Malley said the council suggested the new committee on Wednesday and Pope Francis approved it on Thursday, adding that the initiative was also in line with the zero-tolerance approach of Pope Emeritus Benedict XVI.

The committee could come up with codes of professional conduct for clergymen, guidelines for Church officials in individual countries on how to deal with misconduct and checks for would-be priests, Cardinal O'Malley said.

The Vatican has said its Canon Law prosecutors are investigating thousands of alleged cases of abuse but it is unclear how many have been confirmed and what action has been taken against those found guilty.

Abuses and cover-ups began coming to light a decade ago in the United States and there has been a wave of revelations since then - although victims have mainly been coming forward only in Western countries.

The Vatican on Wednesday said it could not respond to questions on the abuses from the United Nations Committee on the Rights of the Child, explaining that it was not responsible for the actions of individual churchmen because they are subject to national laws.

The scandals - some of them dating back decades - have scarred the Catholic Church worldwide and led to sharp drops in public confidence in countries like Ireland and the United States.