Four youths Vishal, Sanju, Pradeep and Ankit drowned in the canal while they were taking a bath in Rawana Shikarpur village yesterday, they said.
Bodies of Vishal and Sanju have been fished out and efforts were being made to trace two other youths, police said.
In a similar incident, three eight-year-old girls along with their aunty Nazira (35) also drowned in the canal in Nauganwa village in Chandpur area, they said.
