The United Nations human rights office on Wednesday estimated that up to 1,400 people may have been killed in Bangladesh over three weeks last summer in a crackdown on student-led protests against the now-ousted former prime minister.

As many as 1,400 people were killed in former Prime Minister Sheikh Hasina’s violent response to a student-led revolt, according to a U.N. inquiry.

Officials from Bangladesh's former government and security apparatus systematically committed serious human rights violations against protesters staging mass demonstrations last summer, the U.N. human rights chief said on Wednesday.

The UN human rights chief says officials from former PM Sheikh Hasina's government and security services committed serious human rights violations. He said crimes against humanity may have been carried out.