(ANSA) - Rome, July 17 - Italian Premier Mario Monti asked the governor of Sicily to confirm his resignation Tuesday amid the region's debt woes. "Monti has written a letter to Governor Raffaele Lombardo to receive his confirmation of his intention, declared publicly, to resign July 31," a statement from the premier's office said. Monti highlighted that Sicily's debt problems, "which may push it into default," made the situation urgent, according to the statement. Lombardo is facing charges of colluding with the mafia and announced in May that he was resigning. Prosecutors in April presented a request to try Lombardo and his brother Angelo, an MP for Lombardo's Movimento per l'Autonomia (MpA) party, for allegedly swapped votes for favors with Vincenzo Aiello, a prominent member of the powerful Catania-based Santapaola clan. Aiello was arrested in 2010 on a range of Mafia charges. Lombardo has denied the accusations.