Remnants of the module responsible for the Malleswaram bomb blast in the city in April 2013 are suspected to be active and carrying out terror activities in Karnataka and Tamil Nadu.

The Central Crime Branch sleuths, who have custody of three top leaders of the module — Police Fakruddin, Bilal Mallik and Panna Ismail, have renewed their efforts to find out more details of any active remnants.

The recent murder of Hindu Munnani leader Jeevaraj at Sankarankoil in Tirunelveli district of Tamil Nadu is suspected to have been carried out by the remnants of the module.

Security officials claimed that the module, named South Indian Mujahiddeen, is headed by Abubacker Siddiqui, a man the police know little about.

The terror module was busted during the probe into the Malleswaram bomb blast and was later revealed to be behind a slew of targeted assassinations of Hindu right-wing leaders in Tamil Nadu.

“Attacks have not stopped with the arrest of most terrorists. We now suspect their role in the Bangalore-Guwahati Express twin blasts on May 1 and the murder of the Hindu Munnani leader,” police sources said.

A senior CCB official heading the probe said that the interrogation of the leaders of the terror module corroborated the chargesheet filed in the bomb blast case.

He, however, added that they were of little help with regard to information on Abubacker Siddiqui or the other remnants of the terror module.

“The State police were able to bust only the module active in the Malleswaram bomb blast, while the others may be posing a threat to security in Karnataka and Tamil Nadu,” he said.