In Iraq, Islamic State militants shot dead 40 civilians on Tuesday in the northern city of Mosul after accusing them of treason. A spokesman of UN Human Rights Commissioner said, their bodies were then hung from electricity poles in several districts.<br/><br/>A man was also shot dead in public in central Mosul for ignoring an IS ban on using mobile phones. According to a UN report, the killings of the civilians have been carried out on the orders of self-appointed "courts". It said, 20 civilians were also shot dead on Wednesday evening at the Ghabat military base in northern Mosul for leaking information. UN also expressed concern at IS's deployment of teenagers and young boys. Iraqi security forces are continuing their push to take Mosul back from IS.