Two US service members were killed in north central Iraq while accompanying Iraqi security forces on a mission targeting ISIS, the US military said in a statement on Monday attributing the deaths to "enemy forces." The two US military members, killed on Sunday, were not being publicly identified until their families could be notified, the Combined Joint Task Force for Operation Inherent Resolve said in the statement released by the command. The deaths highlight that despite losing its territorial caliphate in Iraq and Syria, ISIS can still pose a threat. An Inspector General report published earlier this year said that despite the death of ISIS leader Abu Bakr al-Baghdadi, the militant group continued low-level attacks and while it did not appear to grow stronger, it did not "lose its freedom of movement or ability to hide and transport fighters and supplies in Iraq´s desert and mountainous terrain." "ISIS in Iraq retains enough manpower and planning capabilities to conduct regular small-scale attacks ... and occasionally infiltrates urban centers, but has not tried to hold territory," the Inspector General said it was told by Combined Joint Task Force for Operation Inherent Resolve. Around 5,200 US troops are currently in Iraq to assist Iraqi security forces as they fight ISIS, according to The Associated Press. Joint counter-ISIS operations between Iraq and the US were restarted in mid-January after they were temporarily suspended because of a drone strike that killed Gen. Qassem Soleimani, a senior Iranian commander, in Iraq.