The Chinese envoy says the agreement would ease the way for Bangladeshi exports and reduce the trade deficit between the countries
Metropolitan Magistrate Snigdha Rani Chakrabarty gave the order on Wednesday.
Gulshan police started the case under the Anti-Terrorism Act naming six and several unidentified others on Monday midnight.
According to police, five terrorists, identified so far and killed by army commandos in their bid to rescue the hostages after a 12-hour-long stand-off, were among the six named.
Home Minister Asaduzzaman Khan Kamal on Tuesday confirmed that five of the persons killed in the commando blitz are militants.
But neither Kamal nor police at the time disclosed the names.