Sharyl Attkisson, a CBS News investigative journalist who has been active in covering the aftermath of the Benghazi terror attacks and the Fast and Furious scandal, announced Monday that she had resigned from the network.

“I have resigned from CBS,” she announced in a tweet.

“It’s been one of life’s great privileges to work at CBS News and I’m sincerely grateful for the many opportunities I’ve had,” Attkisson added in a statement forwarded to TheBlaze.

Sharyl Attkisson (Credit: Twitter)

Sharyl Attkisson (Credit: Twitter)

CBS News spokeswoman Sonya McNair also confirmed Attkison’s departure in an email to TheBlaze.

“CBS News veteran Sharyl Attkisson is leaving the news division to pursue other endeavors,” she said. “We appreciate her many contributions and we wish her well.”

According to Politico, sources said Attkisson had grown increasingly frustrated by what she perceived as a liberal bias at CBS News.

“Attkisson, who has been with CBS News for two decades, had grown frustrated with what she saw as the network’s liberal bias, an outsized influence by the network’s corporate partners and a lack of dedication to investigative reporting, several sources said,” Politico reported. “She increasingly felt like her work was no longer supported and that it was a struggle to get her reporting on air.”

“At the same time, Attkisson’s own reporting on the Obama administration, which some staffers characterized as agenda-driven, had led network executives to doubt the impartiality of her reporting,” the political news website added.

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