A leading political action committee supporting Hillary Clinton's presidential bid returned nearly a quarter-million dollars in donations on Friday due to a contributor's ties to the federal government.

Priorities USA, which raised more $12 million for the former secretary of state in May alone, returned $200,000 to Suffolk Construction upon learning that the construction management firm was under contract with the Department of Defense.

"Based on our internal accounting, the contract appeared to be completed as the project was over four years ago," company spokesman Dan Antonellis told The Hill.

Federal election laws prohibit companies that are under contract with the federal government from contributing to political campaigns or committees.

Although Suffolk's contract had expired nearly a half decade ago, Antonellis said the super PAC decided to return the company's contributions upon being notified of the "ambiguity."

In total, Priorities USA has raised more than $85 million so far this election cycle and a spokesman for the group recently reported having another $45 million in commitments from several high-profile donors.