Kid Rock presents an award onstage at the 2017 CMT Music Awards at the Music City Center on June 7, 2017 in Nashville, Tenn.

Watchdog group Common Cause has filed a complaint against Kid Rock's future Senate run with the Federal Election Commission and Department of Justice.

In the complaint, the group urges attorney general Jeff Sessions and deputy attorney general Rod Rosenstein to investigate whether Kid Rock has violated federal election laws by acting as a Senate candidate -- tweeting about it and launching kidrockforsenate.com -- without registering his candidacy. Common Cause further states he has not complied with contribution restrictions or publicly disclosed contributions to his campaign.

Kid Rock's label, Warner Bros. Records, is named as well: Common Cause alleges the company has also violated federal law and commission regulations by offering 'Kid Rock for Senate' merchandise for sale on its website.

"Given the activities we’ve documented in the complaint, he can’t reasonably claim to be merely testing the waters of candidacy and thus exempt from candidate filing requirements," Common Cause vice president for policy and litigation Paul S. Ryan said. "He is a candidate and is obligated to abide by all the rules and make the same disclosures required of everyone else running for federal office.”

Kid Rock hit back with a brief, to-the-point response.

"I am starting to see reports from the misinformed press and the fake news on how I am in violation of breaking campaign law," Kid Rock wrote on his website Friday (Sept. 1). "#1 I have still not officially announced my candidacy. #2 See #1 and go fuck yourselves."

Read Common Cause's complaint in full here.