Thirteen teenage Iraqi boys were gunned down by the Islamic State for cheering on their national soccer team in last week’s Asian Cup competition, an activist group says.

The group of teens reportedly were watching the match between Iraq and Jordan on a television in Mosul, a city controlled by ISIS.

The boys were killed because they were said to be violating Sharia law by watching the game and their “crime” was announced over a loudspeaker before they were hit with machine gun fire, reports said.

“The bodies remained lying in the open and their parents were unable to withdraw them for fear of murder by the terrorist organization,” the activist group Raqqa Is Being Slaughtered Silently posted on its website, according to the New York Post.

Iraq won the Jan. 12 match 1-0.

Click for more from the New York Post.