Twelve people were arrested as a gambling den was busted in West Bengal's Malda district on Saturday, police said.Acting on a tip-off, personnel of the Gazole police station conducted a raid in the Moyna area and made the arrests, they said.A total of Rs 2.23 lakh in cash was seized from the accused, they added.A case was registered, and an investigation underway, police said.(With inputs from PTI)ALSO READ | West Bengal: Fire breaks out in warehouse next to petrol pump in Howrah ALSO READ | Kolkata's air quality raises health concerns for lung patients, say experts