The man, named Basil Ramadan, opened fire with an AK-47 on a group of ISIS militants at a checkpoint in the city of Tikrit. He killed seven terrorists, before he was killed.
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His son, Ahmed Ramadan, 18 years old, was executed earlier this year by ISIS terrorists, according to local media.
The son was executed along with seven others for collaborating with the Iraqi security forces.
The men were blindfolded and handcuffed before being brought alongside the edge of a river. From there, they were executed with a single shot to the head.