An Indonesian official says the eight Afghans and four Vietnamese were arrested early Thursday on a small island near Makassar, the provincial capital of South Sulawesi province.
He says they were stranded on Kodingareng island after their boat suffered an engine problem.
The official says the migrants had offered to pay "a high fee" to local residents to repair the boat's engine but they reported them to the police instead.
An official from the provincial immigration office says a total of 35 migrants, mostly from Afghanistan, have been arrested in week-long operation in South Sulawesi.
- Australian Broadcasting Corporation
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