PHOENIX — A former bishop who led the Roman Catholic church in metro Phoenix during a worldwide child sexual abuse scandal has been accused of molesting a young boy 35 years ago.

Retired Bishop Thomas O'Brien is accused in a lawsuit of sexually abusing the boy on several occasions at parishes in Phoenix and Goodyear from 1977 to 1982. The Diocese of Phoenix says O'Brien denies the allegation.

O'Brien, now 81, led the diocese in Phoenix as it became embroiled in a global scandal that rocked the Catholic church after allegations surfaced in Boston about pedophile priests going unpunished.