Breitbart reporter Michelle Fields has resigned from the conservative news site over its response to her alleged assault by Donald Trump's campaign manager.
Three of her colleagues also resigned from Breitbart: editor-at-large Ben Shapiro, national security reporter Jordan Schachtel and Jarrett Stepman, an editor.
In his departing statement on Sunday, Shapiro said the site should be "ashamed" of "their treatment" of Fields, whose allegations of assault came amid escalating violence in and around Trump campaign events.
Schachtel and Stepman followed Monday.
"Breitbart News is no longer a journalistic enterprise, but instead, in my opinion, something resembling an unaffiliated media Super PAC for the Trump campaign," Schachtel said in a statement first reported by Politico. "I signed my contract to work as a journalist, not as a member of the Donald J. Trump for President media network."
Stepman said in his own statement that Breitbart was "becoming less of a news site and more of a propaganda organization dedicated to the Trump campaign."
The Trump campaign fought back hard against the allegations. Lewandowski called Fields "delusional" and an "attention seeker," while Trump accused the reporter of having "made up" the incident. Fields, meanwhile, filed a police report.
However, the site then published images questioning whether the Washington Post's Ben Terris misidentified Lewandowski as the person who may have physically assaulted Fields. Breitbart later published a piece purporting to show text messages from Lewandowski which it said "prove" he didn't assault Fields.
"I do not believe Breitbart News has adequately stood by me during the events of the past week and because of that I believe it is now best for us to part ways,"she said in a statement issued to Buzzfeed.
"Both Lewandowski and Trump maligned Michelle in the most repulsive fashion. Meanwhile, Breitbart News not only stood by and did nothing outside of tepidly asking for an apology, they then attempted to abandon Michelle by silencing staff from tweeting or talking about the issue," Shapiro said in a statement issued to Buzzfeed.
He said the story suggesting Fields and Terris had misidentified Lewandowski — a "poorly-evidenced conspiracy theory" — was the "ultimate indignity."
"This is disgusting," Shapiro said. "No news outlet would stand for it."
Breitbart News has not formally commented on the resignations.
Breitbart later posted a statement in its place from editor-at-large and in-house counsel Joel Pollak who apologized to Fields and Shapiro for the piece.
"The article was written by me as part of an effort to make light of a significant company event, and was published as a result of a misunderstanding without going through the normal editorial channels," the statement said.
The Fields incident came a week after a Time magazine photographer was thrown to the floor by a Secret Service agent at another Trump rally and amid escalating concerns over the rhetoric used by the Republican frontrunner.
Trump has come under mounting criticism — from Democrats and from Republican rivals — for failing to fully denounce violent incidents at his eventsand for creating a climate where such incidents can persist.
Those issues were amplified in recent days after video emerged of a man at a Trump rally sucker-punching a protester leaving an event in North Carolina and fights broke out at a cancelled event in Chicago.
Trump himself has said he would like to punch a protester in the face and see another taken out on a stretcher.
This story originally appeared on NBCNews.com