Australia's most senior Catholic official has apologised for decades of child sex abuse by priests. During questioning at a state parliamentary inquiry, Cardinal George Pell said a culture of silence within the church was partly responsible. The Catholic church in Victoria state confirmed more than 600 cases of child abuse by its clergy since the 1930s. The hearings in Victoria are running alongside a national inquiry into abuse in state and religious institutions. Cardinal Pell ... denied being personally involved in the cover-up of paedophile priests, but acknowledged it happened. He has been accused of wilful blindness and what one parent called a sociopathic lack of empathy towards the victims and their families. He acknowledged, however, that his predecessor as Melbourne archbishop, Frank Little - who died in 2008 - did cover up" child sex abuse cases. Australian Prime Minister Julia Gillard last year announced a national inquiry to look into how organisations, including the church, dealt with child sex abuse cases.