Police sources said the detained men were allegedly involved in connecting kidney donors with recipients.

On May 19, Kerala Police arrested a man named Sabit Nasar (30) after he returned from Iran following inputs from central intelligence agencies, which were monitoring his whereabouts for the past few months.

While Nassar admitted to being involved in the illegal sale of kidneys of about 20 people in Iran, police suspect the involvement of more people in the case.

During interrogation, the accused revealed the involvement of another person named Sajith Shyam, a Kochi resident, whom Nassar claimed was the person behind the money transactions in the kidney racket.

Nassar and Shyam, who were later arrested, revealed the presence of multiple agents in different parts of the country, including several North Indian states.

Tamil Nadu Police initiated a parallel investigation into the case and directed all DSPs to investigate missing person cases in their respective jurisdictions.

Based on this investigation, three people named Pollachi were detained from Coimbatore, who, according to the police, admitted to having links with Nassar.

Tamil Nadu Police is also investigating the involvement of some people from the coastal areas of the state who had recently visited Middle Eastern countries.