Dhaka, May 27 -- A case was started at Gulshan Police Station on May 19 over the alleged incident of May 7.

A National Bank spokesman has brushed aside the allegations as false. The police say they are investigating the case.

Exim Bank Chairman Md Nazrul Islam Mazumder heads the bank owners' group Bangladesh Association of Banks or BAB.

National Bank, the first private bank established by Bangladeshi entrepreneurs in the country, is owned by the Sikder family.

The defendants are National Bank Director Ron Haque Sikder and his brother Dipu Haque Sikder. Exim Bank Director Serajul Islam, a retired army officer, started the case against the duo.

The two brothers are accused of abducting and threatening Exim Bank Managing Director Mohamm...