Police conducted drives at two houses in Chittagong city on suspicion of militant hideouts on Monday evening.
However, at the end of the drive, they did not find any bomb or other explosive substances at the alleged militant dens.
Additional deputy commissioner of Chittagong Metropolitan Police (West) Nazmul Ahsan said no arrest could be made during the simultaneous drives that lasted for two and half an hours as there was no one at the two houses.
Acting on the confessional speech from the ‘militant couple’ -- Jashim and his wife Arjina who were arrested during a drive in Sitakunda upazila -- two joint teams of police, Special Weapons and Tactics Team (SWAT) and Rapid Action Battalion (Rab), including a bomb disposal unit each, cordoned off a house at Road-1 of CDA Residential Area in Colonel Haat and another five-storey building at Uttar Kattoli under Akbar Shah thana around 4pm.
Some 200 members of the law enforcement agencies launched simultaneous operations at the houses around 4:45 pm.
Earlier, on March 16, four suspected militants, including a female one and a six-year-old boy, were killed during a special raid by joint forces on a militant hideout at Premtala in Sitakunda upazila of Chittagong, ending an overnight standoff. Two SWAT members were also injured during the gunfight..