Dhaka, Feb. 13 -- A United Nations report has said that Bangladesh's security forces used helicopters to intimidate protesters and possibly deploy unlawful force during a student-led uprising against the government of then-prime minister Sheikh Hasina, citing evidence of human rights violations.

The report, issued by the Office of the High Commissioner for Human Rights (OHCHR), stated that the Rapid Action Battalion (RAB), police, and reportedly the Army's aviation unit deployed helicopters in response to the protests. RAB's black helicopters were particularly used to intimidate protesters and deploy force against them.

Citing senior officials, the report alleged that the-then home minister specifically demanded the deployment of more h...