In Tamil Nadu, two persons are being questioned by the Special Investigation Team (SIT) of the National Investigation Agency in Coimbatore. This follows apprehension that a six-member terrorist gang had entered the state from Sri Lanka.<br />''<br />''The two persons are suspected to have connections with a suspect who had earlier been apprehended at the Kochi Nedumbassery International airport in Kerala. <br />''<br />''Following the warning issued by the National Investigation Agency, security has been beefed up in places of worship as well as bus stands, railway stations and airports. Black Commando teams have been posted near inter state borders. Vehicle checking has been intensified in Tamil Nadu border towns of Walayar, Hosur and Nagercoil.<br />