Shares of Tyre manufacturers fell after R Prasad, a member of Competition Commision of India, told news channel CNBC TV18 that a probe on tyre companies was underway and an order was likely in the next 10 days.
Shares in Apollo Tyres fell 1.6 percent, while CEAT fell 1.8 percent.
Eleven cement makers were slapped with $1.1 billion in fines on June 22 for price fixing, a record penalty from India's increasingly assertive anti-trust regulator.