Jordan's estranged Prince Hamza signed a letter saying "I place myself in the hands of his majesty the king... I will remain committed to the constitution of the dear Hashemite Kingdom of Jordan, and I will always be of help and support to his majesty the king and his crown prince", the royal court said in a statement on Monday.
Prince Hamza, the former crown prince, signed the letter after he met with Prince Hassan, the king's uncle, and other princes on Monday, the royal court said.
"The interests of the homeland must remain above every consideration. We must all stand behind the king in his efforts to protect Jordan and its national interests", the letter said.
This comes less than 12 hours after Prince Hamza said in a voice recording released earlier on Monday that he would disobey orders by the army to not communicate with outside world after he was put under house arrest.
The half-brother of King Abdullah II and former heir to the throne said in voice recording sent to contacts released by the country's opposition that he would "escalate" moves after being barred from any activity and told to keep quiet.
About 20 people, including associates of King Abdullah II, were arrested by Jordanian authorities Saturday on suspicion of plotting to unseat the monarch.
The former crown prince later said in a video recording that he is under house arrest, and claimed the regime was attempting to silence him from criticizing corruption.
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“I’m not part of any conspiracy or nefarious organization or foreign-backed group, as is always the claim here for anyone who speaks out,” Hamzah said.
Jordanian state media denied that Prince Hamza was detained or put under restrictions. Two people familiar with the situation told Reuters security forces had arrived at his house and begun an investigation.
Jordanian Chairman of the Joint Chiefs of Staff, Maj. Gen. Yousef Huneiti, said in a statement Saturday night that "There is no truth to the report that Prince Hamza was detained, but he has been asked to stop all activities that can be exploited to harm national security."
King Abdallah II has received public support from leaders across the region, including Saudi Arabia, Egypt and Lebanon, as well as the U.S. State Department.