The Justice Department is investigating donations made by employees of a Little Rock, Arkansas, law firm to John Edwards' presidential campaign.
An employee of the firm told The Washington Post last week that her boss, prominent trial attorney C. Tab Turner, asked people to support the North Carolina senator and assured them they would be reimbursed.
Law enforcement sources tell The Associated Press that they opened the investigation after seeing media reports of the donations. They stressed that they are investigating the contributions, not any wrongdoing by the Edwards campaign.
After reporters uncovered the situation, the Edwards campaign returned $10,000 in donations from five employees of the firm, Turner and Associates.
Campaign donors are not allowed to funnel donations through someone else under federal law. Otherwise, donors could exceed the legal contribution limit for individuals.