SSB Commandent BS Dogra said the smuggler identified as Roushan Mahto of Raniganj Bazar area of Araria, was trying to crossover to India from Nepal with the precious metal on a motorcycle.
Sources said the silver is of very high purity and is estimated to be worth Rs 6 lakh in India.
Dogra said the motorcycle bore a Nepal registration number, and has been seized too. Mahto is currently being interrogated to find out his links with other persons involved in the racket.