An Iraqi father reportedly went on a shooting rampage against the Islamic State last weekend in response to his son being executed by the militant group.
The Mirror reports that Ahmed Ramadan, 18, was murdered along with seven other young men more than a month ago over accusations they were conspiring with Iraqi security forces.
These men may have been the undercover Iraqi police officers and were shown being shot in the head in a video released by the Islamic State last month.
Basil Ramadan sought revenge for his son on Sunday in Tikrit, one of the first Iraqi cities to be taken over by the group.
Ramadan, said to be in his 60s, went to a checkpoint armed with an AK-47 and opened fire, according to the Mirror.
He reportedly killed seven militants before being shot dead.
Ahmed, a college student, was Ramadan's second son to be killed by Islamic extremists.
His other boy was murdered by al-Qaeda in Tikrit in early 2007.
This act of revenge comes just after the Islamic State beheaded Japanese journalist Kenji Goto on Saturday after threatening to kill him and another Japanese hostage, Haruna Yukawa, earlier last week.
According to Yahoo! News, 47-year-old Goto was captured in Syria last October during an attempt to rescue Yukawa, who was killed a week before Goto.
The group first asked for $200 million in exchange for the hostages' lives but then changed their demand to the release of Sajijda al-Rishawi, a female member of al-Qaeda who helped kill 60 people in a Jordanian hotel attack in 2005.
Al-Rishawi's release has since become the price for the life of a Jordanian pilot held hostage by the Islamic State.