The ACB's clarification came after the Congress claimed Ajit Pawar was "exonerated" in lieu of his support to the Bharatiya Janata Party in forming a government two days ago.
The ACB, in its affidavit submitted in the Nagpur Bench of the Bombay high court, has ruled out Pawar's involvement in cases of alleged irregularities in irrigation projects in the Vidarbha region.
On December 19, the ACB in the affidavit gave a clean chit to Ajit Pawar in the alleged Vidarbha Irrigation Development Corporation scam.
The Maharashtra government day informed the Bombay high court that a white paper on the alleged multi-crore irrigation scam, involving bureaucrats of the water resources department and the Konkan Irrigation Development Corporation, would be ready within three weeks.
Before being appointed as the Mumbai police chief, Singh was posted as the Director General of the Maharashtra Anti Corruption Bureau.
The high court has directed the state government to file its response.
The BJP, however, retorted saying the Sena should stop interfering in its internal affairs and that the party leadership was capable of taking a call on the issue.
Maharashtra government on Saturday gave a clean chit to Deputy Chief Minister Ajit Pawar in the irrigation scam as it tabled in the Legislative Assembly the report of Madhav Chitale committee on the issue alongwith the Action Taken Report.
Former Maharashtra Chief Minister Prithviraj Chavan on Wednesday claimed that the centre imposed President's rule in the state even after the governor had asked him to continue as caretaker chief minister.
The 39-year-old, the fifth child of an illiterate labourer couple and only the second of their eight to be educated, now helms various ventures that bring in a turnover of between Rs 75 crore and Rs 90 crore.