New Delhi, March 19 -- HDFC Bank part-time chairman Atanu Chakraborty has resigned from his post at the second-largest bank of India citing differences over "values and ethics".

In his resignation letter, shared by HDFC Bank with the stock exchanges on late Wednesday, Chakraborty did not specify exactly what made him resign from the role.

His letter was addressed to HDFC Bank's Chairman of Governance, Nomination, Remuneration Committee H K Bhanwala.

"To

The Chairman Governance, Nomination, Remuneration Committee

HDFC Bank

Subject: Resignation from the position of Part-Time Chairman & Independent Director of the Bank

Dear Dr. Bhanwala Ji,

I hereby tender my resignation from as Part-time Chairman and Independent Director on the Boar...