C Thyagarajan, attached to Kotturpuram police station here was stabbed on his neck by Vimal Raj yesterday when the former went to question him in connection with a burglary case.
Thyagrajan was admitted to a private hospital where a surgery was performed on him but he died in the wee hours of today, police said.
Vimal Raj has been arrested under different sections of Indian Penal Code, they added.