Police seized opium estimated to worth over five crore in the international market from a house in Jharkhand's Hazaribag district, a senior officer said on Monday. Acting on a tip-off that huge quantity of contraband was stored in the house of one Kameshwar Sao, Superintendent of Police Manoj Ratan Chothe formed an SIT headed by Arif Ekdam, Deputy Superintendent of Police to verify and apprehend the culprit.