New Delhi, Feb 1 (IANS) Home Minister P. Chidambaram Tuesday said new terror groups were emerging and there was no room for complacency even though the internal security situation in the country had vastly improved in the past year.

Addressing the fourth chief ministers' conference on internal security here, Chidambaram said: "A number of modules (of terrorists) are active. New groups have raised their heads."

He said the internal security situation has "vastly improved in the past one year".

Hinting that the central government is taking a serious view of investigations leading to the involvement of rightwing radicals in terrorist incidents, Chidambaram said: "Every terrorist group will be pursued and brought before the law."

The home minister said there was no let up in cross-border terrorism and attempts at infiltration. He said left wing extremism also posed a major threat to the internal security.

The chief ministers of various states and top security and intelligence officials are attending the meet.

Prime Minister Manmohan Singh, Defence Minister A.K. Antony, Finance Minister Pranab Mukherjee, ministers of state Mullappally Ramachandran