"Our online banking, mobile app and telephony service are now back up and running," a NatWest spokesperson said.

The British bank, however, did not respond immediately on the number of users affected by the outage.

DownDetector.com, a website which monitors outages, showed that at the peak of the outage, there were over 2,600 incidents of people reporting issues with NatWest's service.

(Reporting by Anirudh Saligrama in Bengaluru; Editing by Aditya Soni)