In a major haul, the Mizoram Police and the Assam Rifles have seized banned party drugs, worth Rs 12 crore in the international market, in Kolasib district and arrested one person in this connection, an official said on Saturday.

Acting on a tip-off, a joint team of the state police personnel and jawans of the paramilitary force conducted a search operation at Kawnpui village near the Assam-Mizoram border on Friday and recovered over 2.41 lakh banned Methamphetamine tablets from the person, he said.