A Hebrew sign in Israel calling for Jonathan Pollard's freedom. Photo: Wikimedia Commons.

JNS.org – Imprisoned Israeli spy Jonathan Pollard returned to his jail cell in North Carolina on Sunday after undergoing emergency surgery on his kidneys, intestines and, gallbladder last week.

Pollard’s wife, Esther, said after a phone conversation with her husband that he is “very weak” and “totally drained and worn out,” according to Israel Hayom.

“Even though he tried not to let it show, I could hear the pain in his voice. He is still far from his usual articulate self, and far from well,” Esther said.

Pollard, arrested in 1985 on charges of spying for Israel, is the only person in U.S. history to receive a life prison sentence for spying for an American ally.