The undisclosed income was unearthed after income tax sleuths carried out raids on the properties of a north Karnataka-based exporter and dealer of human hairs in the last fortnight.
The department also seized cash and jewellery worth Rs 5 crore in the raids at the residence and office of the exporter, whom the department did not identify.
The department, in a statement, said the sleuths of the investigation wing here found that even the hair "offered by devotees in temples resulted in tax evasion".
"Income tax searches in the last fortnight of December resulted in a disclosure of Rs 65 crore of previously undisclosed income as well as seizure of Rs 5 crore worth of cash and jewellery from the human hair exporter," it said.
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"Africa has a fascination for the dry hair market -- as the market for weaves, wigs and extensions is known -- estimated to be worth USD 6 billion a year in 2015," it said.
From the hair exporter, the income tax department said, the raid team seized "Rs 2.5 crore cash, jewellery worth Rs 2.5 crore and 140kg of silver articles."
The department said it has "unearthed tax evasion of more than Rs 65 crore and further probe is on".
The same Bengaluru investigation wing of the department had recently cracked down on the alleged nexus between medical centres and doctors in Karnataka and had detected an undisclosed income of Rs 100 crore after searches at a few IVF clinics and diagnostic centres.
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