Abdullah, the son of Saudi preacher Salman al-Awda, announced that the secret session scheduled for his father's trial on Sunday had been postponed for the third time, in which the prosecutor demanded the killing of him on trumped-up charges.
"There are no signs of a solution or a release," Abdullah said in a tweet through his Twitter account on Monday.
The lawyers of the Saudi preacher expressed concern that he would be sentenced to death on the background of a tweet written, and explained that it is about the crisis between Riyadh and Doha.
A Saudi prosecutor had asked Salman to return since his trial began in early September.
The return was stopped by the Saudi authorities on September 10, 2017 as part of a campaign of arrests that included a number of scholars and writers, shortly after a post in which he called for "hearts forming" against reports of possible reconciliation among Gulf states.
In September 2018, the return trial was launched before the Specialized Criminal Court in Riyadh and demanded that the Saudi prosecution issue a death sentence against him on charges of "terrorism", according to his son Abdullah and press reports at the time.
French return lawyers issued a statement in Paris saying that his trial "falls within the framework of a policy of judicial persecution by Saudi Arabia against intellectuals exercising their right to freedom of expression and opinion."