Michael Hirsh, national editor at Politico, resigned after sharing addresses of white nationalist Richard Spencer, CNBC has confirmed.
The Daily Caller first reported the news and took screenshots of Hirsh's remarks before they were deleted.
"Stop whining about Richard B. Spencer, Nazi, and exercise your rights as decent Americans. Here are his two addresses," Hirsh said in a public Facebook post captured by The Daily Caller.
Hirsh made a similar comment on Monday, tweeting that it's "good" that Spencer would be moving to Washington and that "it's important that we know where he lives."
Hirsh's accounts seem to have been deactivated. Twitter and Facebook did not immediately respond to CNBC's request for comment.
Politico's John Harris, editor-in-chief, and Carrie Budoff Brown, editor, said that Hirsh's comments crossed a line.
"These posts were clearly outside the bounds of acceptable discourse, and POLITICO editors regard them as a serious lapse of newsroom standards. They crossed a line in ways that the publication will not defend, and editors are taking steps to ensure that such a lapse does not occur again," Harris and Brown said in a statement to CNBC.
Hirsh made the posts after Spencer, president and director of the National Policy Institute, said "Hail Trump" and "hail our people" during a conference in Washington D.C. on Saturday. Spencer later said his comments were meant to be "cheeky," "exuberant" and "ironic."