The Commissionerate police on Tuesday seized 83 kg of ganja in the vicinity of Jharpada Canal Road near Kanseikhana under the Laxmisagar police limits here and arrested as many as four persons in this connection. Acting on reliable information, the Quick Action Team (QAT) and the Laxmisagar police conducted a joint raid in the morning and apprehended the four persons, who were identified as Sk Basir (25), Sagir Khan (25), Manir Khan (26) and Sk Sabir (27) of Jharpada Muslim Sahi in the city.Besides ganja, two motorcycles, three mobile phones and cash of Rs 470 were also seized from their possession.