Mumbai police shunts out encounter specialist Daya Nayak, other key officers Mumbai police shunts out encounter specialist Daya Nayak, other key officers Daya Nayak was involved in the ATS investigation of the Mansukh Hiren murder case, which is now with the National Investigation Agency. advertisement UPDATED: May 7, 2021 10:37 IST Daya Nayak was part of the ATS investigation of the Mansukh Hiren murder case which is now with the National Investigation Agency (File) The office of the Director General of Police in Mumbai issued fresh orders transferring key inspector-level officers out of Mumbai and Thane. On Thursday, police inspector Daya Nayak of the Anti Terrorism Squad (ATS) was shunted to Gondia district in Maharashtra. Nayak is known as an encounter specialist.