According to Swampland's Time on Wednesday, a national security staffer who tweeted under a pseudonym and leaked internal information for two years was fired by the White House last week.
Jofi Joseph, the nonproliferation director of the National Security Council, tweeting under the handle @natsecwonk, once wrote: "I'm a fan of Obama, but his continuing reliance and dependence upon a vacuous cipher like Valerie Jarrett concerns me."
Other Obama staff members and officials -- including Secretary of State John Kerry and former National Security Adviser Tom Donilon -- have also been targeted by @natsecwonk, which was shut down last week.
For many in the foreign policy community reacting Tuesday night, the revelation that Joseph was the mystery tweeter @natsecwonk was a shock because Joseph was well known among policy wonks and his wife, Carolyn Leddy, is a well-respected professional staffer on the Republican side of the Senate Foreign Relations Committee.
A White House spokesman confirmed that Joseph no longer works there but declined further comment.
Politico reported on the investigation into Joseph's Twitter activities:
After a probe that included an investigation into Joseph's travel and shopping patterns -- parsed from over 2,000 tweets -- lawyers from the White House counsel's office confronted Joseph and ordered him to leave the executive complex, according to two sources familiar with the situation. Joseph had been scheduled to rotate out of White House duty to a senior job in the Pentagon, an administration official told POLITICO.