William A Sangma, a self-styled commander of the Achik National Cooperative Army (ANCA), and his accomplice Alas R Sangma were arrested from Chinakkarai in Tirupur district of Tamil Nadu on Tuesday, a police spokesperson said.
Acting on a tip off, a special team took the help of the Tirupur district police and tracked William and his accomplice in a readymade garment manufacturing factory, he said.
William is the most wanted militant who escaped from Mendipathar police up in August last, he said.
His accomplice Alas R Sangma is also wanted in connection with a case in which he was accused of killing his six-year-old son.
William and his accomplice are being brought to Garo Hills on Wednesday. Earlier on Monday, Sanjeev Roy, a close associate of William A Sangma, was arrested from Lower Babupara in Tura and seized Rs 31,745, five mobile phones, and some documents from his possession.
Based on his leads, William was arrested.

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