SURABAYA, Indonesia, Sept 18 (Reuters) - Tens of thousands of Indonesian Moslems have signed up for a holy war against U.N. forces due to arrive in East Timor in the next few days, religious leaders said on Saturday.

Heads of Indonesia's largest Moslem mass organisation in East Java province told Reuters they were prepared for a jihad. Sections of the allied Nation Awakening Party (PKB), one of Indonesia's main political parties, were also involved.

Saturday September 18, 4:04 am Eastern Time

Timor-indonesia-jihad Surabaya

An official on the provincial board of the Nadhlatul Ulama (NU) mass organisation put the total number of those who had signed up over the last few days at 107,000.

``The call for jihad against foreign intervention in East Timor should be understood as a spontaneous heroism,'' said Hasyim Muzadi, head of NU in East Java. ``The anger of Indonesian people is not only directed at Australia, but also especially at the United States.''

East Java, one of the most firmly Moslem areas of Indonesia, has seen some of the most vocal protests against Australia's involvement in the U.N-backed intervention force. An advance party is due in the East Timor capital Dili on Sunday.

Hasyim accused Washington of hypocrisy in supporting moves for East Timor independence, after giving Jakarta tacit support in 1975 to invade East Timor for fear of it becoming a communist enclave.