The woman was working as a cook in a private matriculation school at Bavandur here, police said
People also blocked an ambulance when police tried to take the woman's body for postmortem. There was a heated exchange between police and the people.
Police lathicharged the crowd to disperse them and five persons, including a sub inspector, were injured in the lathi charge and the melee that followed.
They said this was the third incident within few days. Earlier one woman was found murdered in her house and another woman in a lake.
They charged that police had not acted in both the cases.
A special team had been formed to nab the culprits involved in the murder of the woman, who worked as a cook in the school, police said.