Ajaya Das (45), a Class IV employee of Kiarabanka-based Veterinary office, on Monday committed suicide by hanging himself from a ceiling fan on the office premises. Police have and sent the body to the Mahakalapada PHC for autopsy. Reason behind the suicide is yet to be ascertained. The police suspect Das might have committed suicide after losing his mental balance. According to sources, Das had left a note holding his colleague Kalia as responsible for his death. Inquiry is on, stated Mahakalapada police station IIC Avinab Dalua.