Saudi King Abdullah proposed implanting Guantanamo detainees with electronic chips to monitor their movements after their release, a US diplomatic memo released by WikiLeaks revealed on Tuesday.
"I've just thought of something," Abdullah blurted during a March 2009 meeting with White House counter-terrorism advisor John Brennan.
The two were discussing the fate of 99 Yemenis still held at the time in the controversial US military prison at Guantanamo Bay, Cuba.
The king proposed the prisoners be implanted with electronic microchips so that after their release they can be tracked "with Bluetooth" technology, a US embassy report on the meeting said.
Abdullah explained that "this was done with horses and falcons," according to the memo. But "horses don't have good lawyers," Brennan replied.