In a move unprecedented in the American Catholic Church, Los Angeles Archbishop Jose Gomez announced Thursday that he had relieved his predecessor, Cardinal Roger M. Mahony, of all public duties over his mishandling of clergy sex abuse of children decades ago.

Gomez also said that Auxiliary Bishop Thomas J. Curry, who worked with Mahony to conceal abusers from police in the 1980s, had resigned his post as a regional bishop in Santa Barbara.

The announcement came as the church posted on its website tens of thousands of pages of previously secret personnel files for 122 priests accused of molesting children.