World leaders rally behind Jordan's King Abdullah II
Jordanian authorities arrested Prince Hamzah, King Abdullah's elder half-brother, along with several others on Saturday over an alleged threat to the kingdom's "security and stability", the military said.
Arab states, including Egypt, Saudi Arabia, Qatar and the United Arab Emirates, responded with statements of full support for Jordan's king.
Further afield, the United States joined the chorus of support for King Abdullah, who has acted as a key regional ally to Washington in its operations against the Islamic State group.
Prince Hamzah, the eldest son of of Jordan's late King Hussein, Jordan's crown prince for four years before being stripped of the title to make way for the current monarch’s eldest son, Hussein.
The former crown prince was escorted from his Amman palace on Saturday and placed under house arrest.
No details have been released to reveal the full extent of the plot, however the source said it was “well-organised” and involved "foreign" elements.