A longtime Bronx bishop has resigned after accusations of sexual abuse.

Bishop John Jenik, of Our Lady of Refuge in Bedford Park, reportedly engaged in inappropriate behavior with a teenage boy in the 1980s.

Jenik says he never abused anyone, but Cardinal Timothy Dolan says the allegation is both credible and substantiated.

"This is sad, this is sad for all of us, it's sad for the victim and I sure appreciate that victim coming forward and accepting my invitation for all victims to come forward," Dolan said. "It's certainly a sad day for Bishop Jenik, it's a very sad day for the people of Our Lady of Refuge parish who love him and cherish him."

The bishop's resignation comes as the New York's Attorney General's Office continues its investigation into clergy sex abuse in the Roman Catholic Church.

In a letter addressed to parishioners last month, Jenik wrote that he is asking the Vatican to review the matter and ultimately prove his innocence.