Mr Ahir has been sworn-in as a Minister of State and will handle the chemicals and fertilizers portfolio.
The Lok Sabha MP hailing from Chandrapur in Maharashtra is credited along with Environment Minister Prakash Javadekar in unearthing the coal scam which was a major campaign issue for the BJP in its march to power. The scam also led to Supreme Court ultimately cancelling licenses of several coal blocks.
After being a member of the Maharashtra Legislative Council from 1994-96, Mr Ahir for the first time got elected in the 11th Lok Sabha in 1996.
In the 14th Lok Sabha, Speaker Somnath Chatterjee had hailed Mr Ahir as a "role-model" for MPs.
He has also been a member of many Standing Committees and Parliamentary Committees. From September 1, 2014 onwards, he has been the chairperson of the standing committee on Coal and Steel.
Mr Ahir was born on Nov 11, 1954 in Nanded, Maharashtra and has two sons and a daughter and is an agriculturist by profession.