In an interaction with PTI, Union Home Secretary G K Pillai also made clear that action would be taken against any police official who was found implicating innocent youths on serious charges of blasts in the past.
"Right now, they (right-wing elements) are not that big a threat... whatever intelligence we are getting. But it is a cause of worry. The more radical and fundamental groups you have in the country, it is a cause of worry. That is something we have to tackle," he said.
India cannot afford to have mushrooming growth of radical groups of whatever hue as it was bad for the country, Pillai said, adding the extent of radical right-wing extremist groups was extremely limited as of now.
"What we understand, it is extremely limited. But even 50 or 100 people who are conspiring in one group or different groups to do this or that... it is itself a cause of concern," he said.
Pillai said there are some people who are still at large and the "NIA and CBI are looking for atleast about 20 plus people" in various cases of blasts including the Samjhauta train explosion.
Pillai said the Government would firmly deal with these elements as well. "In our point of view all people who indulge in terrorism act are enemies of the state. We treat them all equally."
Police in Maharashtra and Rajasthan have been probing alleged involvement of right-wing activists in connection with blast cases in Malegaon and Ajmer.
In the wake of Swami Aseemanand`s confession that Malegaon 2006 was a handiwork of Hindu groups, Pillai was clear that action would be taken against officials who were found guilty of implicating youths in blast cases.
"Wherever we find that false cases are filed, action will be taken. Union Home Minister also has made it clear that there will be zero tolerance on human rights violations," he said.