Last week, Oakland Raiders radio voice Brent Musburger sent out a tweet mocking Massachusetts Sen. Elizabeth Warren’s claim of having Native American heritage.

The tweet included an image of men wearing Native American headdresses standing behind President Donald Trump at a Montana campaign rally, chiding them as Warren’s “relatives.”

Musburger on mocking Warren: ‘I was just having fun’

The tweet drew backlash and prompted Musburger to address the issue during Sunday’s radio broadcast of the game between the Raiders and the Los Angeles Chargers.

He apologized “if you were offended” by the tweet and claimed “I was just having fun,” according to ESPN’s Paul Gutierrez.

Musburger’s tweet came in heat of midterm campaigns

Musburger’s tweet came prior to Tuesday’s midterm elections that saw Trump make a whirlwind tour of the country to drum up support for GOP candidates.

Trump, who commonly uses racist and xenophobic tactics to stir up his base, frequently mocks Warren as “Pocahontas” over her claim to have Native American heritage.

Musburger’s prompted apologies before

Musburger drew criticism during his national broadcasting days for commenting on the looks of then-Alabama quarterback A.J. McCarron’s then-girlfriend Katherine Webb during the ESPN broadcast of the 2013 BCS championship game.

The comment drew an apology from ESPN.

This is the first we’ve heard from Musburger or the Raiders since Musburger’s tweet about Warren. The NFL has shied from challenging Trump and bowed to his pressure in shaping the league’s national anthem policy and strives in general to stay out of his crosshairs.

Musburger’s halfhearted apology Sunday seems the type to fly under Trump’s radar.

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Jason Owens is a writer for Yahoo Sports. Follow him on Twitter.