Two more cadres of Sri Lanka's Liberation Tigers of Tamil Eelam (LTTE) were arrested early on Wednesday in Chennai and sent to judicial custody, the police said.
K. Uma Ramanan, 33, and A. Amalan, 27, who hail from Jaffna in Sri Lanka, were found in possession of an unspecified quantity of ammonium nitrate, a chemical fertiliser that can also be used as an explosive, besides cables and detonators, police sources added.
The arrests follow on Tuesday's arrest of Selvam, another operative of the Liberation Tigers of Tamil Eelam (LTTE).
After Wednesday's arrests, the total number of LTTE operatives taken into custody the past week has touched 10. This follows a fresh drive against LTTE suspects.
The LTTE is engaged in a bitter campaign to form an independent Tamil state in Sri Lanka, which is separated from Tamil Nadu by a narrow strip of sea.