They were handed over to the police on Saturday, he said.
Extortion money amounting to Rs 4 lakh and documents, including photographs and contact numbers of insurgents, were recovered from their possession, he said.
Security forces have been carrying out operations in south Arunachal Pradesh to keep the area free from insurgents.
The battalion had apprehended eight linkmen of the banned outfit since Thursday and recovered over Rs 16 lakh extortion money from their possession, the spokesman added.
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