The Mumbai police have seized 12.6 kg of mephedrone (MD) worth ₹24.47 crore and arrested six persons in raids spanning over three months, an official said on Tuesday.

The raids were conducted in Mumbai, Navi Mumbai and Karjat in neighbouring Raigad district, an official said here on Tuesday.

He said that the police arrested one of the accused with 45 gms of MD in Chembur in March this year. Based on information provided by him, they conducted a raid in Navi Mumbai on May 15 and seized more than 6 kg of the substance worth ₹13.37 crore.

The official said during the probe, the police established the role of drugs peddler Sonu Pathan and raided a farmhouse in Karjat and seized 5.5 kg of MD worth more than ₹11 crore, along with materials used to manufacture the drug.

Six persons have been arrested, and a case has been registered against them under the Narcotic Drugs and Psychotropic Substances (NDPS) Act, he said.

The special squad (Anti-Narcotics) under Deputy Commissioner of Police (DCP) Zone VI Navnath Dhavle has registered 75 cases and seized contraband worth ₹42.74 crore of contraband in the last five months, the official said.