Police seize around 4kg of MD and raw materials worth Rs 3.5. Pimpri Chinchwad police have dismantled an illicit mephedrone manufacturing unit in a Jambhulwadi flat, seizing 4kg of the drug and arresting a Nigerian national involved in the operation. A 40-year-old police head constable from the Pimpri Chinchwad anti-narcotics squad died of a heart attack on Sunday night after he ran after a suspect who tried to escape during a raid.