Congo's constitutional court is poised to rule on a challenge to the presidential election, with the government on Friday dismissing an unprecedented request by the African Union continental body to delay releasing the final results because of "serious doubts" about the vote.

Upholding the official results could spark new violence in a country hoping for its first peaceful, democratic transfer of power since independence in 1960. At least 34 people have been killed since provisional results were released on Jan. 10, the United Nations said.

The AU on Monday will send a high-level delegation to Congo to address the crisis in the vast Central African nation rich in the minerals key to smartphones and electric cars around the world. Its neighbors are concerned that unrest could spill across borders.

Congo government spokesman Lambert Mende called the matter one for the country's judicial bodies, and "the independence of our judiciary is no problem."

The declared runner-up in the Dec. 30 election, Martin Fayulu, has requested a recount, alleging fraud. He asserts that Congo's electoral commission published provisional results wildly different from those obtained at polling stations.

Fayulu welcomed the AU's stance and urged Congolese to support it.

Congo faces the extraordinary accusation of an election allegedly rigged in favor of the opposition. Fayulu's supporters have asserted that outgoing President Joseph Kabila made a backroom deal with the declared winner, Felix Tshisekedi, when the ruling party's candidate did poorly.