A 1984 batch IAS officer Sudeep Singh Dhillon was on Friday appointed as principal secretary to Haryana chief minister (PSCM). Dhillon was presently posted as additional PSCM. He replaces retired IAS officer Chattar Singh who has been selected for the post of member Union Public Service Commission (UPSC). The state government has also given a three month post retirement employment to 1980 batch IAS officer, Samir Mathur who formally retires on August 31. Mathur is currently posted as additional chief secretary, home and will continue to hold the charge till November 30.