Sri Lankan Navy personnel stand guard at a blocked road in Colombo on April 30, 2019, a week after a series of bomb blasts targeting churches and luxury hotels on Easter Sunday. - Religious tensions and a government ban on covering the face since the Easter Sunday suicide attacks have forced conservative Muslim women in Sri Lanka to shun veils, head scarves and long robes in public. (Photo by ISHARA S. KODIKARA / AFP/ Getty Images)

The National Investigating Agency (NIA) on Wednesday (12) carried out searches at various places here following reports that some people are in touch with those involved in the Easter day church blasts in Sri Lanka.

Raids were conducted by a team of NIA sleuths at seven places in the city on the basis of inputs that certain people are reportedly in touch with those behind the Easter day attacks on social media, police sources said.

The searches were a continuation of those conducted here and in Kerala in connection with an ISIS terror module, they said.

However, details about the seizure of documents or devices were not available immediately, they added.

The IS had claimed responsibility for the serial bombings in Sri Lanka and around nine suicide bombers were involved in the attack.

The Sri Lankan government has said that local terror group National Towheeth Jamaat (NTJ) carried out the attacks with support from the IS.

Soon after the April 21 attack in Sri Lanka that left nearly 250 dead, India stepped up security in the southern states.