These are images that seemingly show militants from the Islamic State of Iraq and the Levant, or ISIL taking aim at captured Iraqi soldiers.
The photos, posted on a militant website on Saturday, end with the final image showing the bodies of the captured drenched in blood after being shot.
Iraq's chief military spokesman confirmed the authenticity of the photos and said the images showed around one-hundred-70 Iraqi troops who had been killed.
The militants claim to have executed 1-thousand 7-hundred Iraqi soldiers,but the government would not confirm the information.
The militant forces are spreading to northwest of the country after taking over a number of key cities, incluing Mosul, the second largest city in the country.
The Iraqi government has reinforced defenses around the capital, however, a series of explosions inside Baghdad killed over a dozen and left more than 40 injured.
According to a U.S. military official, around one-hundred-and-50 U.S. marines have been sent to Baghdad to help bolster security at the U.S. embassy.
Most of the staff are being evacuated to safer parts of Iraq or to neighboring Jordan.
U.S. Defense Secretary Chuck Hagel ordered the USS George H.W. Bush to the Persian Gulf on Saturday,raising the possibility of imminent U.S. air strikes.
U.S. President Barack Obama, however said on Friday that any strike in Iraq will have to be coordinated with a thorough plan from Iraq's political leaders to set aside their sectarian differences.
Shin Se-min, Arirang News.
Meanwhile South Korea's foreign ministry says all 13-hundred or so South Korean nationals in Iraq are currently in regions that are considered relatively safe, like the capital Baghdad.
The ministry said 24 nationals who had been situated in dangerous regions have been relocated to safer areas or have returned to Korea.
It said the South Korean government has formed a special task force team to monitor the safety of South Koreans in the country on a day-to-day basis.