A man was held in south Mumbai allegedly with 3.110 kilograms of mephedrone valued at Rs 4.66 crore, an official from the Anti Narcotics Cell said on Friday.

Acting on a tip-off, a team of the Azad Maidan unit of Mumbai Crime Branch's ANC laid a trap on Thursday evening and apprehended Dongri-resident Ashik Ali Feroz Poisarwala (33) from Clare Road in Byculla, he said.