The nephew of Samajwadi Party leader Abu Azmi was among the four to be arrested by the police for allegedly running an international drug racket, police said. During the operation conducted by the Delhi police, five kilograms of drugs worth Rs 40 crore was seized. The special cell of the Delhi police said that party drug MDMA also known as ICE was seized. Methylenedioxymethamphetamine or MDMA is a popular drug in Delhi, Mumbai and Goa. It is in huge demand for rave parties.