An ATS team from Mumbai is in Bhatkal, the coastal town of Uttara Kannada district, to look for clues to the July 13 serial bomb blasts in Mumbai.
Police said the team visited some places in the town on information that some suspects there have a role in the blasts.
However, they were tightlipped over the nature of operations being carried by the ATS team.
Earlier a report from Mumbai said that police will question those who are believed to have an association with family members of Riyaz and Iqbal Bhatkal, the founder members of Indian Mujahideen.
On July 13, three near simultaneous blasts ripped through crowded areas in Mumbai, leaving 19 people dead.