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.
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.
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Investigation wing officials of the Income Tax department conducted searches in more than 20 establishments of the Martin Group in Coimbatore on Wednesday.
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Stating that the BJP was the prime enemy of the Congress, the AICC leader said the party was facing the election with the aim of defeating it.
Congress veteran Mallikarjun Kharge echoed a similar view, saying the raids are spreading fear psychosis.
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They said a total of 18 locations in Chennai, Namakkal and Tirunelveli are being raided since early morning hours.
Police said the assistant commissioner of police (ACP) of Banasawadi sub-division has been assigned to probe the matter based on the complaint by Balakrishnan.
Sources said a team of the local police was seen deployed about 200 metres from Kakkad's house during the raid.
He said the IT Department and the ECI were partial as search operations carried out on the premises of DMK leaders like Duraimurugan are given publicity while remaining silent on other raids.