White House reporter Joe Williams reportedly says he's leaving Politico after being suspended for a racial remark he made about Mitt Romney. 

He tweeted Friday that "I'm done @ politico," according to The Daily Caller. His Twitter page is now locked. 

Williams was suspended after suggesting on MSNBC Thursday that Romney only feels "relaxed" in the company of other white people. 

Politico reported the suspension shortly after midnight Friday. 

Williams, White House correspondent for the prominent political news site and newspaper, had injected race into his commentary on the Romney campaign while on MSNBC. 

After saying it's "really interesting" that Romney appears regularly on Fox News Channel's "Fox & Friends," Williams said the appearances point to a "larger problem that he's got to solve" if he wants to win the presidency. 

"When he comes on 'Fox & Friends,' they'll like him. They're white folks who are very much relaxed in their own company," said Williams, who is black.