"Effective immediately, Sam Nunberg, a low-level political adviser, is no longer associated with the Donald Trump For president campaign," Trump campaign manager Corey Lewandowski said in an interview.

The firing, first reported by CNN, followed a report Friday by Business Insider that Nunberg had posted slurs and other offensive content on his private Facebook page in entries dating to 2007.

In one post, Nunberg allegedly called the Rev. Al Sharpton's daughter a "n-----." In another, he allegedly called President Obama a "Socialist Marxist Islamo Fascist Nazi Appeaser" and mocked Obama's proposal for "Kenyan" health-care reform, Business Insider reported. The posts have apparently been removed, although Nunberg's Facebook account remained active Sunday.