The health department employees were protesting against transfer of 67 of their colleagues when one of them, who was among the agitators fell ill suddenly and was rushed to a nearby hospital, where doctors declared him brought dead, Bidhannagar police commissionerate officers said.
Following the death, the protestors allegedly ransacked health secretary Anil Vermas chamber at the Sastha Bhawan.
A huge force from the Bidhanngar Police Commissionerate was deployed, the officers said.