Donald Trump. AP

Republican presidential nominee Donald Trump urged for the appointment of a special prosecutor to investigate Hillary Clinton's involvement with the Clinton Foundation during her tenure as US secretary of state during a rally in Akron, Ohio, on Monday.

Trump accused his Democratic rival of corruption, claiming that donors of the foundation were given preferential treatment and awarded with special favors.

He went on to say that the investigation calls for special circumstances, as the US Department of Justice "has proven itself to be a political arm of the White House."

"After the FBI and Department of Justice whitewash of the Clinton email crimes, they certainly cannot be trusted to quickly or impartially investigate Hillary Clinton's crimes," Trump said at a campaign rally in Akron, alluding to Clinton's use of a private email server.

The GOP nominee is also demanding a complete shutdown of the Clinton Foundation after emails released by Judicial Watch, a conservative watchdog organization, revealed that Clinton may have given donors special access.

"There is absolutely no connection between anything that I did as secretary of state and the Clinton Foundation," Clinton said in a statement last month.

In light of the accusations levied against Clinton, her campaign said that the foundation would stop receiving foreign and corporate donations if she is elected in November.