The "uncle-nephew duo" arrested by the Directorate of Revenue Intelligence (DRI) last month for "corporate type smuggling" of gold amounting to Rs 120 crore has been booked under COFEPOSA (Conservation of Foreign Exchange and Prevention of Smuggling Activities) Act, an official said on Friday.

Taking a cue from the seizure of 8 kg of foreign-origin gold valued at Rs 2.72 crore and Rs 24,000 cash from a person inside a bus at Dankuni toll plaza in West Bengal's Hooghly district, the DRI sleuths arrested the "uncle-nephew duo" who was instrumental in successfully ferrying huge quantity of smuggled gold from various bordering locations.