WASHINGTON, Aug. 25 (Xinhua) -- U.S. President Donald Trump's adviser Sebastian Gorka is no longer employed at the White House, an official confirmed Friday.

"Sebastian Gorka did not resign, but I can confirm he no longer works at the White House," a White House official said in a statement.

Gorka was closely aligned with a nationalist faction led by ousted White House chief strategist Steve Bannon.

Gorka, 46, served as a deputy assistant to Trump after leaving his post as national security editor at Bannon's Breitbart News.

The counter-terrorism expert was reportedly in a feud with national security adviser General H.R. McMaster and not happy about Trump's policy in Afghanistan.

His departure comes a week after Bannon left the White House to return to far-right Breitbart News, and follows a string of oustings and resignations of West Wing aides.