Mumbai Police seized mephedrone, a banned drug, worth more than Rs 40 lakh following a raid in Mazgaon area of the city on Monday, an official said.
The police also apprehended a person from the spot for enquiry, the official said.
Based on a specific information, the Mumbai Crime Branch's Anti-Narcotics Cell conducted the raid at Navanagar in Mazgaon area and seized the drug, he said.
Mephedrone, also known as MD, is a synthetic stimulant and banned under the Narcotic Drugs and Psychotropic Substances (NDPS) Act.