VATICAN CITY (CWNews.com) - The Israeli security agency Mossad has reportedly warned Italian and Vatican security officials that "Islamic terrorist groups" might be planning an attack on the Vatican during the Easter holidays.

    The warning came in time to heighten security for the public Palm Sunday ceremonies which included a papal Mass in St. Peter's Square with 100,000 people, according to The Times of London newspaper. According to the report, the tip was the sign of a warming relationship following Pope John Paul II's visit to Israel last month.

    The Vatican had already increased security for the Jubilee Year at the prompting of Italian police, including the placement of 35 airport-style metal detectors inside Bernini's colonnade. The Times of London also reported that hidden surveillance cameras have been set up and plainclothes police are stationed inside the square and on rooftops.

    Il Messaggero newspaper also quoted Italian intelligence sources claiming terrorists plan to "strike at the heart of the Catholic Church during the Holy Year." The newspaper said Saturday the target was "probably the Pope himself", although other targets were possible, since "what matters is the symbolism of an outrage ... an attack in or around the Vatican would be enough."