Prominent human rights lawyer Amal Clooney is calling for the release of Egyptian-Canadian journalist Mohamed Fahmy from a Cairo prison, saying his health is in danger due to a hepatitis C infection.

The lawyer, who recently married actor George Clooney, is representing Fahmy along with barrister Mark Wassouf and an Egyptian lawyer. In a joint statement from their London-based office, Clooney and Wassouf called Fahmy’s imprisonment a “travesty of justice.”

They also revealed that Fahmy has hepatitis C and requires special treatment that he can’t get in prison. An injury has also left Fahmy with a permanent disability in his right shoulder, which will require extensive surgery, they said.

“Mr. Fahmy has not committed any crime,” Clooney and Wassouf said in their statement, issued this week. They are calling on Egypt’s Supreme Court to overturn Fahmy’s conviction and release him on appeal.

“And in the meantime, the authorities should grant him temporary release so that he can receive the medical treatment that he so urgently needs,” they said.

Fahmy was working for news broadcaster Al-Jazeera English when he was arrested in Cairo on Dec. 29, 2013, along with two colleagues.

After a trial which Clooney and Wassouf described as “fundamentally unfair,” the three journalists were convicted in June of aiding the Muslim Brotherhood group, which the Egyptian government has declared a terrorist organization.

Fahmy was sentenced to seven years in prison, and is now appealing that decision.

Clooney and Wassouf said “there was not a shred of evidence” presented at trial to prove that Fahmy was affiliated with the Muslim Brotherhood.

“He is serving a 7-year prison sentence for simply reporting the news,” they said.