The stock plunged 6.17 per cent to settle at Rs 223.70 on BSE. Intra-day, it tumbled 9.81 per cent to Rs 215.
According to sources, residential apartments, offices and factory premises linked to the Ahmedabad-based pharma firm were searched across the state.
The operations were a result of an internal probe by I-T Department, where evidences related to tax evasion and suspected black money transaction were found against Claris promoters, sources added.
Replying to the clarification sought by the exchange, the company today said ".... Search/survey has been carried out by the Income-Tax authorities on the company on August 4, 2015."
"We have extended full cooperation to the I-T authorities," the filing added.