The Prisoners of Conscience, an independent non-governmental organization advocating human rights in Saudi Arabia, announced in a post on its official Twitter page that Sheikh Muhammad bin Dalim al-Qahtani, a leader of the Umma Islamic Party, suffered the serious life-threatening medical condition after he was poisoned on purpose at al-Ha'ir Prison.
The post added that Qahtani has been transferred to al-Iman Hospital in Riyadh, and is apparently in a critical condition.