The Mizan news agency of Iran's judiciary confirmed the executions, describing the two men as having insulted Islam's Prophet Muhammad and promoted atheism.

“The international community must show with its reaction that executions for expressing an opinion is intolerable,” he said in a statement. “The refusal of the international community to react decisively is a green light for the Iranian government and all their like-minded people around the world.”

It wasn't immediately clear when Iran carried out its last execution for blasphemy. Other countries in the Middle East, like Saudi Arabia, also allow for death sentences to be imposed for blasphemy.