A Jordanian court sentenced two former officials to 15 years in jail for an alleged plot to overthrow the monarchy led by King Abdullah.

“The two defendants held views that are against the political system and the monarchy and sought to create chaos and sedition in Jordanian society,” said the judge of the military court, reported Reuters.

Awadallah pleaded not guilty, and his lawyer—former U.S. federal prosecutor Michael Sullivan—told Reuters “the so-called trial was conducted by a secret military court where he was denied the opportunity to refute any of the prosecution’s evidence, and he was not allowed to call witnesses.”

The prosecution presented intercepted messages as proof of Awadallah advising Hamza to continue speaking against the monarchy to members of powerful tribes that usually support the government.