According to Iraqi Police, the terrorists organization set alight 45 people in al-Baghdadi city of Iraq. Security men are also feared in the causalities.
Many people, including security men, were taken hostage after the militants had taken over al-Baghdadi last week.
The latest executions by the Islamic State has been reported days after the terrorists released a video of the execution of 21 Libyan Christians.
Earlier, Jordanian fighter pilot Moaz al-Kasasbeh was burned alive by the militant group in the start of February.
Al-Baghdadi was one of the few towns which were still under the control of the Iraqi government before it was besieged by the militants after an offensive in January.
It should be noted that Ain al-Asad airbase is less than 10 kilometers away in which the 7th Divison United States are undergoing training. The US forces, with the support of Iraqi forces, have thwarted an attack on the training camp earlier this year.