Additional Director General Jai Jeet Singh was appointed as Thane police commissioner by the Maharashtra government on Monday.
Singh, a 1990 batch IPS officer, is currently heading the Anti-Terrorism Squad (ATS), Maharashtra.
Vinit Agarwal, who currently holds the position of Principal Secretary of the Home Department of Maharashtra, will replace Singh as the new ATS chief.
1993-batch IPS, Sanjay Saxena, will replace Agarwal as the new Principal Secretary.
The post of Thane police chief was vacant for a week as the current commissioner Vivek Phansalkar was promoted to the position of Managing Director, Police Housing and Welfare Corporation.