(JTA) – An Al Jazeera editor acknowledged planting an undercover reporter inside pro-Israel organizations last year in Washington, D.C. Clayton Swisher, the Qatar-owned news network’s head of investigative reporting, made the revelation Monday in an interview on Al Jazeera’s main Arabic channel. He said a documentary will be aired based on the reporter’s work.

Earlier in the day, the United Kingdom official media watchdog rejected complaints against an earlier Al Jazeera documentary that exposed an Israeli Embassy official attempting to influence British lawmakers. Ofcom said the network’s reporting, which led to the resignation of Shai Masot, who was filmed plotting to “take down” British lawmakers seen as unfriendly to Israel, was not antisemitic.

Following the announcement, Swisher said that at the same time Al Jazeera had an undercover reporter in Britain, it also had one in Washington. He said the network held off on broadcasting its reporting from the U.S. capital until hearing Ofcom’s verdict.

“With this U.K. verdict and vindication past us, we can soon reveal how the Israel lobby in America works through the eyes of an undercover reporter,” he told The Intercept. “I hear the U.S. is having problems with foreign interference these days, so I see no reason why the U.S. establishment won’t take our findings in America as seriously as the British did, unless of course Israel is somehow off limits from that debate.”

Since Al Jazeera began airing its U.K. investigation, a number of pro-Israel organizations have voiced suspicions that they were infiltrated by an undercover reporter from the network. In January, a Tablet article named the reporter as James Anthony Kleinfeld, a British citizen active in British pro-Palestinian groups.

Al Jazeera has yet to comment on the reporter’s identity.

In August, Israel took steps toward revoking Al Jazeera’s press credentials, but subsequently backed down. Meanwhile, Saudi Arabia, Bahrain, Egypt and the United Arab Emirates severed diplomatic relations and travel with Qatar over its alleged support for terrorism and ties with Iran. They demanded the closure of Al Jazeera.