Speaking to reporters on Friday, Shivakumar took a dig at the BJP saying that it was an open secret that the party has been using the Income Tax and other departments against its political rivals.
The parliamentarian, V Elumalai of the AIADMK, is seeking re-election from his Arani Lok Sabha seat.
Kumaraswamy, Shivakumar and Khan were not available for comment.
Even before the completion of the NBCC bid submission process, tax demands from the Income tax office have played a spoiler in the resolution process of debt-ridden Jaypee Infratech Ltd (JIL).
Income Tax Department sleuths raided a hotel in which Chief Minister H D Kumaraswamy was staying in Hubballi on Monday evening.
CBDT in a statement clarified that the returns filed included those of previous assessment years, excluding which returns filed in 2018-19 showed an almost 19 per cent rise.
The raids have come to an end in the wake of one of Martin’s staff, who was allegedly picked up by the I-T department for questioning two days back, being found dead in a waterbody near Karamadai.
The Income Tax Department, on Friday, raided 70 places across the country including 22 places in Coimbatore where the searches continued in properties belonging to Martin.
Income tax filings, which appeared unstoppable until recently, seem to be having a change of heart.
Coalition leaders say BJP misusing central agencies; no raid took place during 2014 polls.
FY18-19's decline comes amid high growth witnessed post-demonetisation and GST rollout when the tax filings grew at an enviable 43 per cent in FY15-16, and 22 and 28 per cent in FY16-17 and FY17-18.
A CBI team had recovered the bribe amount from Chandrasekhar Reddy while he was accepting it and questioned him for six hours.
Investigation wing officials of the Income Tax department conducted searches in more than 20 establishments of the Martin Group in Coimbatore on Wednesday.
Refunds for assessment years 2015-16 and 2012-13 got "adjusted against outstanding demand" in case of Modi, while it was the case for Gandhi in assessment year 2011-12.
There has, however, been no official word so far from the I-T Department as to what led to to the raids in Srinagar or whether any incriminating evidence was recovered.