The trio, identified by security agencies as C Lalchhal (28), C Znanghak (27) and Zorema (21), hailing from Mizoram, were found to be moving suspiciously around 1430 hours at the Terminal-1D of the airport when they were intercepted by a CISF squad.
"The trio were travelling to Guwahati on an IndiGo flight and they work in an Adidas firm in Gurgaon," CISF spokesperson and Deputy Commandant Hemendra Singh said.
The trio, he said, were carrying three large suitcases and on suspicion the CISF team asked them to go through a detailed inspection which led to the recovery of 77.5 kg of pseudoephedrine tablets, a popular narcotic stimulant.
CISF authorities subsequently called up Narcotics Control Bureau (NCB) sleuths who arrested them and confirmed the narcotic drugs, which have an estimated value of Rs 62 lakh in domestic market.
Central Industrial Security Force, which is the designated security force to guard civilian airports in the country, has deployed special squads to detect the movement of drugs and other contraband at vital airports like Delhi and Mumbai among others.