ISLAMIC State fighters have reportedly executed 13 teenage boys for watching the Asian Cup soccer match between Iraq and Jordan, which was held at Brisbane’s Suncorp Stadium.

The young football fans were rounded up and publicly executed by firing squad after being caught watching the game on TV in the Iraqi city of Mosul, an anti-IS group says.

IS militants accused the boys of breaking religious laws by watching the soccer match and read out their so-called crimes on a loudspeaker before their executions, the Mail Online reports.

The group, which goes by the name Raqqa is Being Slaughtered Silently, secretly documents the public executions that have become commonplace in Raqqa by posting pictures and information on its website, The Telegraph reports.

The activists say the bodies of the teenage boys lay out in the open after they were slaughtered. “The bodies remained lying in the open and their parents were unable to withdraw them for fear of murder by terrorist organisation,” the group wrote on its website.

The horrific murders came as IS militants carried out an execution frenzy in Iraq, murdering at least 20 people in a 48-hour period, including two men “found guilty” of being gay.

Photographs of the killings, shocking even by the group’s barbaric standards, have been circulating on social media since last Thursday.

They include images of two blindfolded men being hauled to the top of a tower before being thrown to their deaths, one at a time, as a large crowd watches from below.

At least 17 young men were crucified before being shot in the head in a village square and an alleged adulteress was stoned to death.

NEWS.com