India, Dec. 19 -- Shares of InterGlobe Aviation Ltd. are in focus today after the Competition Commission of India said it was reviewing allegations of anti-trust violations by IndiGo following mass flight cancellations earlier in December.

The CCI has "taken cognizance of information filed against IndiGo in the context of the recent flight disruptions witnessed in the aviation sector, across various routes" and decided to proceed with an initial assessment. It did not disclose details of the allegations.

One complaint, seen by Reuters, accuses IndiGo of cancelling flights and then offering seats at much higher prices, amounting to abuse of its dominant market position. The filing by lawyer Kartikeya Rawal alleges his ticket was cancelle...