Lok Sabha Speaker Om Birla and Foreign Secretary Vikram Misri attended the swearing-in ceremony.
Counter-Terrorism and Transnational Crime chief Monirul Islam said they got information that Jamaat-ul-Mujahideen Bangladesh chief Musa along with some other JMB terrorists are in Sylhet.
Of the four terrorists, two including a woman were killed on Monday. The bodies of the female terrorist and one man were handed over to police but two others were inside as they were wired or surrounded by explosives.
The chief of the terror group blamed for Bangladesh's worst terror attack at a Dhaka cafe was among the four Islamist militants killed in one of the country's longest anti-terror operations in Sylhet, police said on Tuesday.