Shaukin Singh, who was detained on theft charge, died yesterday in the police station.
Later, alleging police atrocities as the reason behind the Singh's death, his kin and people of Kudrail village started a sit-in outside the police station with the dead body.
SHO Bharat Pandey was placed under suspension today.
SP Nilabaja Chowdhury suspended the officer and ordered a probe into the matter by Circle officer, sources said.