A senior official in the Obama Administration was forced to quit his job after Jerusalem-based journalist Aaron Klein wrote an expose revealing the man had supported conspiracy theories about the 9/11 Al Qaeda terror attacks on Manhattan's Twin Towers.

Klein, who covers Israel for World Net Daily, caused a major embarrassment to the Obama Administration in a web expose originally written last April. In the report, he revealed that President Barack Obama's "green jobs czar" Van Jones subscribed to anti-U.S. conspiracy theories about the multi-site 9/11 attack, including supporting a statement that senior Bush government officials may have allowed the 9/11 attacks to occur.

On Saturday, Jones quit after Fox News and other websites confirmed the story and headlined it around the world.

According to Klein, a day after the 9/11 attacks Van Jones led a vigil that expressed solidarity with Arab and Muslim Americans as well as with what he called the victims of "U.S. imperialism" around the world. Klein also charges Van Jones with being an admitted black nationalist and radical communist.

When Jones was in jail for participating in a “peaceful demonstration,” he reportedly said, "I met all these young radical people of color - I mean really radical: communists and anarchists. And it was, like, 'This is what I need to be a part of.' I spent the next ten years of my life working with a lot of those people I met in jail, trying to be a revolutionary."

Jones was the leader and founder of a radical group, the communist revolutionary organization Standing Together to Organize a Revolutionary Movement, or STORM. The group led a vigil Sept. 12, 2001, at Snow Park in Oakland, Calif. The radical group's manual boasted that the 9/11 vigil was held to express solidarity with Arab and Muslim Americans and to mourn the civilians killed in the terrorist attacks "as well as the victims of U.S. imperialism around the world".

"We honored those who lost their lives in the attack and those who would surely lose their lives in subsequent U.S. attacks overseas," STORM's manifesto recalls.