BTV scroller declared at 7 pm Bangladesh time that that President has proclaimed "a state of emergency". Curfew has been announce from 11 pm to 5 am everyday till further notice. President to address the nation soon. Advisors sent home (update: they have been asked to go back to Bangabhaban)
Story so far: UN Sec Gen's representatives announced today that the upcoming election will not be legitimate and withdraw all assistance to the process. Army rank and file, rightly deduced that a illegitimate election = illegitimate government and hence no recognition from UN and hence no peacekeeping duty. That acted as a catalyst to get the supreme leaders do go to Bangabhaban and ask the President to call for emergency.
Likely next steps: El Presidente will resign as head of CG and remaining advisers asked to resign. Then the "President" will appoint a new CG head and set of advisers. A reshuffle of the EC is in the cards. Election in 3 to 6 months. I believe Chief want to leave earliest but has got sanction that to ensure that a proper and acceptable election to take place they can take up to 6 months. UN, US, EU will make the requisite mumblings but not impose any sanctions.
Will keep you posted on the developments.