NEW DELHI, April 28 (Xinhua) -- India's anti-terror agency National Investigation Agency (NIA) Sunday carried out searches at three locations in southern state of Kerala to probe a local group related to the Islamic State (IS) terror group, police said.

The agency officials detained three people for questioning.

"Raids were carried out at the houses of three suspects, two in Kasargod and one in Palakkad, after which they were detained for questioning," a police official said.

"The NIA officials said the raids were carried out after the agency got an information that the three persons are suspected to have links with some of the accused who left India to join the Islamic State."

Local media reported that the probe agency was also trying to probe if the suspects have links with those involved in last week's suicide bombings Sri Lanka.