Official sources said a formal announcement is expected to be made soon since his name has been cle ared at the government's top level.
Cambridge educated 51 year-old Mohan, is the son of veteran lawyer and nominated Rajya Sabha MP, K Parasaran, who was attorney general between 1985 and 1989 during the tenure of former PM, Rajiv Gandhi.
Mohan began his legal career in 1984 and was designated as a senior advocate in 2002. On the new responsibility, he said "I have given my consent to the government, though I am yet to receive a formal and final communication."
He added, "Matters relating to public interest would be the priority. Law officers have to be responsible towards the society."
During his nine-year stint as an ASG, Mohan handled a number of cases for the government in the Supreme Court.