Feb 23 (Reuters) – Shares of India’s IDFC First Bank slipped 15% on Monday, and ‌were on course for their worst ‌session in six years, after the private lender disclosed suspected ​fraudulent transactions worth 5.9 billion rupees ($65 million), raising concerns over internal controls and potential earnings impact.

Earlier in the day, the stock hit 70.98 rupees, ‌its lowest since ⁠October 6, 2025.

Late on Saturday, the bank said the issue was limited ⁠to government-linked accounts at a branch in Chandigarh in northern India, and that it had ​suspended four ​staff and ordered a ​forensic audit.

UBS estimated ‌the suspected amount at about 22% of IDFC First’s fiscal 2026 profit after tax, though it said the capital impact would be limited to around 1% of the bank’s net worth.

Morgan ‌Stanley echoed the view, pegging ​the potential hit to fiscal ​2026 profit ​before tax at roughly 20%.

Jefferies said ‌the lender will have to ​reassure investors ​that the issue had not spread to other clients and that the matter did ​not appear ‌to be systemic.

($1 = 90.7640 Indian rupees)

(Reporting by ​Surbhi Misra and Kashish Tandon in Bengaluru; ​Editing by Sumana Nandy)