The police said that the men were involved in murder for gain cases in Haryana. A total of 10 people were picked from Madhavaram based on a request from the Haryana police. The men were found to be in touch with a main suspect, in a case in Haryana, through the mobile phone, sources said.
After interrogating them, the police found only two were involved in the cases. Others detained for questioning were working here as lorry drivers, said the police.
Those questioned by the police include natives of Delhi, Haryana and Rajasthan. A senior police officer from Haryana visited the city on Sunday to inquire them. The city police sources ruled out the possibility of the men, questioned by the Haryana police, being involved in any crimes in Chennai.