MATARAM, Indonesia, Sept. 11 (UPI) -- Police in Indonesia's West Nusa Tenggara province say 56 illegal immigrants from Afghanistan were being held after being apprehended by navy officers.

West Nusa Tenggara police said the immigrants, reportedly all male, were found aboard a wooden boat by a naval patrol near the island of Lombok Thursday night. They were to be transferred to the custody of the U.N. High Commission for Refugees and the International Organization for Migration, The Jakarta Post reported Friday.

Authorities also have four Indonesian nationals in custody on charges they were smuggling the immigrants to Australia.

West Nusa Tenggara police spokesman Cmdr. Tribudi Pengastuti said at least 60 attempts at human smuggling were foiled this year in the Indonesian province.

The Jakarta Post said most illegal immigrants come from Afghanistan, Iran and Iraq.