The kidnappers had demanded a ransom of Rs seven lakh and forced the businessman, who was kidnapped in full public view here last evening, to speak to his family.
Superintendent of Police Aswin Kotnis and ASP Saroj Kumar Thakur formed eight teams which tracked the mobile calls made to the family to the Kondalampatty foothills.
Police surrounded the area and stormed a hut there in the wee hours today and arrested four gang members and rescued the businessman who was engaged in selling locks here.