Egyptian authorities executed on Tuesday 15 militants convicted of killing soldiers in the Sinai region. The members of the ISIS Sinai affiliated were convicted by the military tribunal for the murder of seven soldiers and two officers at a checkpoint in Sinai in 2013. The hangings took place at two prisons in the north of the country early on Tuesday, security sources said. A military court issued the sentences and interior ministry officials carried out the executions simultaneously at Borj al-Arab and Wadi al-Natroun prisons, the sources added. Most of the militants were from Sinai region and were accused of “joining militant groups and taking part in carrying out, planning and assisting in killing a number of army and police personnel in Sinai,” the sources said. ISIS’ Sinai branch has waged attacks against security forces in a years-long insurgency in North Sinai, and in the past year expanded targets to include Christians and other civilians. An attack on a mosque last month which killed more than 300 people, the deadliest in Egypt’s modern history, was widely attributed to ISIS, but the group did not claim responsibility for it.