According to a senior tax official, state ministers Kamaraj and Udumalai Radhakrishnan and party leader Talavai Sundaram barged into the residence of Vijayabaskar when searches were on.
Sundaram is the special representative of the state government in Delhi.
Allegedly, they verbally abused an official who was leading the team of search officials.
Hence, the team was further strengthened by deploying more officials at the search site, the official said.
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The official said CRPF personnel who gave proximate security should have acted swiftly.
"We are taking up this issue with CRPF higher authorities. No one should have been allowed to enter when searches were on," the official told PTI.
Meanwhile, a ruling party follower has reportedly claimed that he was injured when a CRPF constable pushed him at the residence of the minister and he has got himself admitted to a hospital.