The special task force (STF) of Calcutta police has arrested four suspected smugglers and seized around 65kg of cannabis and about 10kg of brown sugar, a derivative of heroin, in Malda district.

With the arrest of the duo, the STF have detained four persons with narcotic in Bengal in the past 48 hours, including a resident of Bihar.

On Tuesday, Jayanta Mahato and Ranjit Sarkar were arrested from Gazole and the cannabis were seized from them.

On August 15 (Sunday), the STF nabbed Lalit Sahani, a resident of Samastipur district in Bihar, and Sumit Alipatra, who hails from Mirzapur in Murshidabad district, with the brown sugar. The duo were held from Adina, located under Gazole police station.

Sources said the raids had been carried out following information from Ismail Sheikh and Avishek Salam, who were arrested by the STF from the Calcutta port area on August 12. The STF had recovered 1.291 kg of yaba tablets from Sheikh, a resident of Kaliachak, and Salam, who is from Manipur.

In another incident, Kaliachak police arrested a person with counterfeit Indian currency amounting to Rs 6 lakh on Tuesday night.

The seized notes are in denomination of Rs 2,000.

The arrested Khudiram Mandal is a resident of Duishotobighi.