A man was held allegedly with 210 kilograms of ganja worth Rs 4 crore in Khopoli in Raigad district, over 100 kilometres from here, a Narcotics Control Bureau official said on Friday.

Acting on a tip-off about an inter-state drug trafficking gang, a team from Mumbai NCB laid a trap at Khopoli on Mumbai-Pune Highway on Thursday and arrested the man who is a resident of the metropolis, he said.