The narcotics consignment, concealed in 21 packets and hidden in specially designed cavity in the truck's body, was loaded near Imphal in Manipur. It was being taken to Bhojpur district in Bihar, NCB sources said.
"Manipuri ganja is considered the best in India and is much in demand. We had secret information about the movement of the consignment and were keeping a tab on it through our resources," the sources said.
"Accordingly, we laid a trap on Mahatma Gandhi Bridge over the Ganga between Hajipur and Patna. This is a big catch for us," the sources said.
They are allegedly part of an inter-state syndicate, the sources said.
The arrested persons were being interrogated to find out the destination of the consignment and their links in Bihar and other states.
