"Maoists have a big role in all anti-dam protests in India, especially in the Northeast," BJP national security cell convenor P Chandrasekhar Rao told reporters here.
Assam and other states in the region are witnessing a series of protests, at times violent, against construction of dams. In Assam, the protests are being led by Krishak Mukti Sangram Samiti (KMSS), he said.
Rao alleged that Maoists, along with other extremist groups, are getting all the illegal arms through Myanmar border.
"Initially it was Bangladesh, but now Myanmar from where 90 per cent of the illegal weapons come to the region. It's also a threat to the entire country. Illegal arms available here are the major cause for the insecurity of the common people," he added.
The BJP leader also accused the UPA government of not doing sufficiently to stop anti-social activities of the surrendered militants.
"A review should be done on the ceasefire groups so that their activities can be monitored. Due to lack of proper rehabilitation system, most of the surrendered militants and members of the ceasefire groups are involved in anti-social activities," he said.