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The rising cases of smuggling of the highly-addictive party drug, mephedrone, also known as meow meow, into Mumbai, has now led cops to focus on peddlers involved in its supply. To add to their worries, the police suspect the drug to be 'homegrown', with production units hidden in the outskirts. The development comes in the wake of over 20 kg of meow meow being seized this year in the city.