RAMESWARAM: Indian Coast Guard on Monday apprehended four Indian fishermen from the 4th islet in Rama Setu near Dhanushkodi in Rameswaram Island.
However, they were released after being interrogated at the Mandapam Coast Guard station.
In the aftermath of the serial bomb blasts in Sri Lanka on Sunday, Indian Coast Guard and Police have tightened the security along the coastal lines to prevent any possible infiltration from Sri Lanka via sea route.
Police have stepped up security in all churches in coastal areas including fish landing centre near Danushkodi.
On Easter Sunday, a string of eight devastating blasts rocked three churches and three hotels in Sri Lanka, killing at least 250 people and injuring over 400 others.
The blasts targeted St Anthony's Church in Colombo, St Sebastian's Church in the western coastal town of Negombo and another church in the eastern town of Batticaloa around 8.45 am (local time).
Three explosions were reported from the five-star hotels including the Shangri-La, the Cinnamon Grand and the Kingsbury in Colombo.