Dhaka, Sept. 6 -- A group of 30 Bangladeshis deported from the United States arrived at Hazrat Shahjalal International Airport late Thursday night under strict security.

Several eyewitnesses and airport sources allege the returnees were brought back in handcuffs and leg irons, sparking renewed criticism over the treatment of undocumented migrants.

Their special chartered flight landed at Hazrat Shahjalal International Airport in Dhaka around 11:30 pm on Thursday and remained on the runway nearly 2am.

During those hours, officials reportedly removed the restraints before the deportees were escorted to the airport's arrival area.

Security was tight, with special teams from the Ministry of Home Affairs, intelligence agencies, and officia...