ROUGH CUT (NO REPORTER NARRATION)

STORY: Scuffles broke out in the southern town of Naples Friday when a group of students, union members and hard-left protesters threw bottles, eggs and firecrackers at police.

The police had moved to break up a demonstration outside an Equitalia revenue collection office in the city center.

Demonstrators later blocked the street with rubbish containers.

Earlier in the day, a suspect package was sent to an Equitalia office in Rome amid growing public anger against tax authorities.

The package, containing explosive powder but no detonator, was under investigation, police said.

Prime Minister Mario Monti condemned the latest incident and issued a statement expressing solidarity with the agency's staff. He said he would meet Equitalia management.

Austerity measures adopted by Monti's government to control Italy's public debt have caused mounting resentment, although protests generally have been peaceful and there have been no real signs of organized political violence.