Bangladesh, June 1 -- In the early hours of 30 May 1981, Ziaur Rahman - President of Bangladesh, founder of the Bangladesh Nationalist Party (BNP), and a celebrated commander in the Liberation War - was killed at the Chattogram Circuit House.

He had arrived in the port city the previous day on a visit aimed at addressing internal party matters. He never returned.

Forty-five years later, as Bangladesh marks the anniversary of the death of its seventh president, questions surrounding the circumstances of the assassination continue to attract public interest: who ordered the killing, and what were the motives behind it?

The then District Commissioner of Chattogram, Ziauddin M Chowdhury, was awakened by the sound of gunfire.

A guard info...