The Supreme Court in Iran confirmed the death sentence for a local blogger accused of insulting the Prophet Mohammed in several Facebook posts, according to local reports and human rights organizations.

Soheil Arabi, 30, was arrested in November of 2013 by Iran's Revolutionary Guards Corps’ (IRGC) and was sentenced to death back in September after he admitted to running several Facebook pages in which he posted messages insulting the Prophet. (The insults have never been specified, and the pages removed.)

Atrocity: Soheil Arabi's death sentence upheld by Supreme Court. His crime: his #Facebook posts were considered insult to the Prophet #Iran — Persian Banoo (@persianbanoo) November 25, 2014

Iran's Supreme court upheld his sentence on Tuesday, according to the U.S.-based International Campaign for Human Rights in Iran. The court even added a new charge of "corruption on Earth," which doesn't allow for a pardon, according to a source that spoke to the human rights organization.

"Regrettably, the charge of ‘corruption on Earth’ cannot receive a pardon, according to [Iranian] law," the sources said. "At this stage there is only room for hoping that the Judge in Branch 41 of the Supreme Court announces that this charge was added by mistake and to eliminate it, sending the case to a lateral court for review. Otherwise, Mr. Arabi will be executed."

The sentencing comes less than a week after Iran freed one of its most famous Internet activists, Hossein Derakhhshan, who spent 6 years in prison for insulting religious leaders, cooperating with "hostile states" and publishing "propaganda." He was initially sentenced to 20 years in prison.

This kind of harsh sentencing for online crimes is increasingly the norm in Iran. In May, authorities sentenced eight Facebook users to a combined 123 years in jail, then two months later, another group of eight activists received a combined sentence of 127 years.

Earlier this year, Iranian authorities arrested six youth for posting a video to YouTube in which they danced to the Pharrell Williams' song "Happy."

This clampdown comes despite Iran's Prime Minister Hassan Rouhani's repeated promises of an opening to the West and to Internet freedom. Many observers genuinely believe his intentions. But the more religious and conservative leadership loyal to Iran's Supreme Leader Ayatollah Ali Khamenei appear to be willing to crack down on Internet activists to slow down Rouhani's reformist overtures.

Arabi's case has received a lot of attention inside and outside of Iran, including a petition to stop his execution.