One source is a Saudi scientist at a US university who maintains close relations with the Saudi dissident community. The other source is a Saudi activist who knows about the events.
Haidar is a writer and journalist for social issues. His father owns a house in Vienna, Virginia, according to the Saudi Arabian academic, who for safety reasons had not raised any objections.
Another Saudi dual citizen, the writer and physician Bader al-Ibrahim, was also arrested According to sources
Saudi Arabia-based Saudi rights group Alqst reported that seven activists had been arrested on Thursday releasing their names.
All seven prisoners are writers and social media bloggers associated with them, Yousef's family and friends with Haidar, the sources said. Previously, they had participated in public discussions about reforms and publicly endorsed women's rights, such as the right to drive, sources said.
Two of the activists arrested on Thursday are the Saudi couple Thumar al-Mazouqi and Khadijah al-Harbi. said the sources. The sources, Harbi added, have written on women's rights and campaigned for women's rights. She and Mazouqi support the detention of women's rights defenders currently in court.
The sources also confirmed that a lecturer at the University of Riyadh, Anas al-Mazrou, was arrested on 1
The Saudi government did not immediately respond to CNN's request to comment on the case. CNN has turned to the US Embassy in Riyadh for comment.
The killing of Jamal Khashoggi, a US Citizens and government critics, in Saudi Arabia in October 2018 Consulate in Istanbul sparked international turmoil.
The number of arrests of dissidents seemed to be dropping sharply after Khashoggi's assassination, and many observers hoped that the kingdom's actions would be de-escalating, said Alqst director Yahya Assiri to CNN.