Iraqi security forces kill Isis prisoners because they believe that if the militants are sent to prison camps they will bribe the authorities in Baghdad to release them. “That is why Iraqi soldiers prefer to shoot them or throw them off high buildings,” says one Iraqi source. A former senior Iraqi official said he could name the exact sum that it would take for an Isis member to buy papers enabling him to move freely around Iraq.
The belief by Iraqi soldiers and militiamen that their own government is too corrupt to keep captured Isis fighters in detention is one reason why the bodies of Isis suspects, shot in the head or body and with their hands tied behind their backs, are found floating in the Tigris river downstream from Mosul. Revenge and hatred provoked by Isis atrocities are motives for extrajudicial killings by death squads, but so is distrust of an Iraqi judicial system, which is notoriously corrupt and dysfunctional.