BAGHDAD -- The Islamic militant group that seized much of northern Iraq has posted photos that appear to show its fighters shooting dead dozens of captured Iraqi soldiers in a province north of the capital Baghdad.
The pictures on a militant website appear to show masked fighters of the Islamic State of Iraq and the Levant, or ISIL, loading the captives onto flatbed trucks before forcing them to lie face-down in a shallow ditch with their arms tied behind their backs. The final images appear to show the bodies of the captives soaked in blood after being shot.
Captions say the killings were to avenge the death of an ISIL commander, Abdul-Rahman al-Beilawy, whose death was reported by both the government and ISIL shortly before the al-Qaida splinter group captured Iraq's second largest city Mosul and Saddam Hussein's hometown of Tikrit in a lightning offensive.
Iraq's top military spokesman, Lt. Gen. Qassim al-Moussawi, confirmed the photos' authenticity on Sunday and said he was aware of cases of mass murder of captured Iraqi soldiers in areas held by ISIL.
U.N. human rights chief Navi Pillay warned on Friday of "murder of all kinds" and other war crimes in Iraq, and said the number killed in recent days may run into the hundreds, while the wounded could approach 1,000. Speaking in Geneva, she said her office has received reports that militants rounded up and killed Iraqi soldiers as well as 17 civilians in a single street in Mosul.
Her office heard of "summary executions and extrajudicial killings" after ISIL militants overran Iraqi cities and towns, the statement said.
Most of the soldiers who appear in the pictures are in civilian clothes. Some are shown wearing military uniforms underneath, indicating they may have hastily disguised themselves as civilians to try to escape.
Many soldiers and policemen left their uniforms and equipment behind as the militants swept into Mosul, Tikrit and surrounding areas.
The captions did not provide a date or location, but al-Moussawi said the killings took place in Salahuddin province, the capital of which is Tikrit.