A candidate in Liberia's October election is accusing the president of buying votes and using government funds to campaign.
A spokesman for President Ellen Johnson Sirleaf on Friday denied the allegations by soccer star George Weah.
Sirleaf's secretary Cyrus Badio says the allegations are "reckless and unsubstantiated."
President Ellen Johnson Sirleaf is a Harvard-trained economist who became Africa's first democratically elected female president in 2005.
Weah is running for vice president alongside Winston Tubman, who is among Sirleaf's 15 challengers.
Liberia was ravaged by civil wars for years until 2003. The country is still struggling to maintain a fragile peace with the help of U.N. peacekeepers.