A Roman Catholic priest is accused of lying to a Pennsylvania grand jury about his relationship with a mobster.

The Reverend Joseph Sica was arrested outside his Scranton home today. He's facing perjury charges based on his testimony to a grand jury investigating a casino owner's possible mob ties.

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Sica is an adviser to the Mount Airy Casino Resort owner.

Prosecutors believe Sica lied when he said he only met organized crime boss Russell Bufalino by chance. They're pointing to two photographs as evidence: one of Sica and the late mobster arm-in-arm, the other of him with the mobster's reputed replacement as the head of the crime family.

They also have a 1982 letter they say Sica wrote to the then-governor's wife asking for her help to free Bufalino from his prison sentence.