Christians in the Holy Land have handed a dossier detailing incidents of violence and intimidation by Muslim extremists to Church leaders in Jerusalem, one of whom said it was time for Christians to "raise our voices" against the sectarian violence.

The dossier includes 93 alleged incidents of abuse by an "Islamic fundamentalist mafia" against Palestinian Christians, who accused the Palestinian Authority of doing nothing to stop the attacks.

The dossier also includes a list of 140 cases of apparent land theft, in which Christians in the West Bankwere allegedly forced off their land by gangs backed by corrupt judicial officials.

From the birthplace of Christ at Bethlehemto the site of his Crucifixion in Jerusalem, Christian Church leaders have long been desperate not to upset the delicate ethnic and sectarian balance in the region by blaming either Jews or Muslims for the decline of their once robust religious community.

That self-imposed silence now appears to be crumbling.

"The problem exists," said Father Pierbattista Pizzaballa, Jerusalem's senior Franciscan, known as the Custos of the Holy Land. "The Christian community has always suffered in the last few years because we are a minority. Many have the temptation to leave, so the community is shrinking."

While he stressed that "we are not talking about a confrontation with all Muslims", he added that "we don't want to see violations of the law - sometimes we have to raise our voices".

The alleged attacks on Christians have come despite repeated appeals to the Palestinian Authority to rein in Muslim gangs.

A spokesman for the Apostolic Delegate, the Pope's envoy to Jerusalem, said nothing had been done to tackle the problem. "The Apostolic Delegate presented a list of all the problems to Mr [Yasser] Arafat before he died," he said. "He promised a lot but he did very little."In the offices of his tiny Christian television station in Bethlehem, Samir Qumsieh said this week that Christian appeals to Mr Arafat's successor as Palestinian