Manafort-linked super PAC faces questions over $1 million in unreported donations — after group was probed by Mueller
Robert Mueller testifies before Congress (screengrab)

A pro-Trump super PAC just amended its 2016 filings to show an additional $1 million in donations — and the Federal Election Commission has questions.

New York Times legal reporter Ken Vogel tweeted Wednesday that the FEC has asked the Rebuilding America Now PAC about the amendment — and noted in its letter that failure to respond in a timely manner "may result in enforcement action."

As Vogel noted, federal prosecutors have been investigating the super PAC as a potential recipient of foreign money and for its financial arrangement with indicted former Trump campaign manager Paul Manafort.

Vox reported last week that the Rebuilding America Now PAC, which Manafort helped set up in 2016, paid $125,000 to him in 2017 to help pay his legal bills.

The PAC has also been mentioned in court filings by special counsel Robert Mueller unsealed in January in relation to Manafort, Vox reported.