Nigeria, Oct. 31 -- A federal panel of investigation into the deaths of 33 detainees at a Nigeria Security and Civil Defence Corps (NSCDC) facility in Minna, Niger State, has detailed how senior officers authorised operations without clearance, ignored warnings of possible suffocation and failed to intervene despite repeated cries for help.

The Independent Investigation Committee's final report described how an investigation officer inspected the overcrowded detention cell but left without ordering an intervention, while a guard refused to open the door even as detainees screamed and banged the door and walls for hours.

It also documented the detention of children alongside adults, alleged interference with evidence after the deaths and...