<span style="color: #222222;">In Tamil Nadu, the Coast Guard authorities in Nagapattinam, today arrested seven youth engaging in suspicious activities in the coastal area. Several models of explosives were also recovered from them. Following the incident, security has been strengthened in and around Nagapattinam fishing harbour.</span><br />'' <br />'' <span style="color: #222222;">The Coast Guard and Marine Police are presently engaging in a practice session called Sagar Kavach in all the 18 security check posts in and around Nagapattinam.</span><br />'' <br />'' <span style="color: #222222;">The objective of the exercise is to provide seamless seaward cover along coast by all concerned security agencies from coastal belt.</span><br />