Feb 3 (Reuters) - India's aviation regulator said on Tuesday the wingtips of an Air India and an IndiGo aircraft scraped while taxiing at an airport in Mumbai.

Air India confirmed the incident, adding that it resulted in damage to their aircraft.

"While AI2732 was taxiing from C1 towards M4 for departure and IndiGo arrival flight was taxiing joining B1, right wing tips of both the aircraft touched each other," the aviation regulator said, adding that the aircraft returned to the bay for inspections.

As a precautionary measure, the Air India aircraft has been grounded, according to the operator.

IndiGo did not immediately respond to Reuters' request for comment.

(Reporting by Abhijith Ganapavaram; Chandni Shah and Anusha Shah in Bengaluru; Editing by Shreya Biswas)