They are -- Jahangir Alam Don, 43, executive officer of Dilkusha Branch, security guards Shah Alam, 50, Yunus Ali, 50, and driver Abdul Latif, 55.
Dhaka Metropolitan Magistrate Dhiman Chandra Mandal passed the order when Sub-Inspector Shawon Kumar Biswas of Kotwali Police Station, also investigation officer of the case, produced them before the court seeking seven-day remand.
Earlier on May 10, the official along with two armed security guards, collected the money from various branches in Old Dhaka and was on its way to the bank's head office in Motijheel.
At Babubazar, the security guards shouted that the bag containing money had gone missing.
Police arrested them on the day.
Habibur Rahman, senior executive vice-president of National Bank's Dilkusha branch, filed the case.