A senior officer said that the accused were sent to police custody in connection with 13 cases against them in three police stations of Karkala sub-division of Udupi.
The government forced the ANF in 2005 following Naxal activities in the hilly region of Malnad for social justice reaching its peak.
Police said that he was one of the key members of the Chandil-Bundu zone of the extremist outfit and also served as their key spokesperson for several years.
They were members of Maoist front organisations like the Dandakarnya Adivasi Kisan Mazdoor Sangthan, jan militia and Chetna Natya Manch.
A bag with ten gelatin rods, five electronic detonators, 10 non-electronic detonators, 10-meter cortex wire, a mobile handset, a couple of batteries, steel tiffin box and some explosives was recovered
Police unearthed and defused two landmines planted by the banned CPI (Maoist) party Naxalites near Allubaka between Venkatapuram and Cherla on Monday.