The Constitutional Court of the Democratic Republic of Congo rejected a challenge to last month's presidential election results. The high court said early Sunday that runner-up Martin Fayulu's challenge to Felix Tshisekedi's win was "inadmissible."

In the verdict, the court also rejected a request to carry out a recount and declared Tshisekedi "President of the Democratic Republic of Congo by simple majority."

The ruling comes shortly after the African Union had asked Congo to delay announcing the final election results, casting "serious doubts" about the vote. A visit by a high-level delegation scheduled for Monday was postponed following the court decision.

On January 10, DR Congo's Electoral Commission said Tshisekedi had provisionally won with 38.57 percent of the vote against Fayulu's 34.8 percent.

Fayulu had denounced the figures and called the results an "electoral coup," which he said was forged by Tshisekedi and President Joseph Kabila. 

Upon hearing the top court's decision, Fayulu remained defiant and declared himself president.  

"The constitutional court has just confirmed that it serves a dictatorial regime ... by validating false results, (and enabling) a constitutional coup d'etat," he said in a statement.

"I ask the entire international community not to recognize a power that has neither legitimacy nor legal standing to represent the Congolese people," he said in reference to Tshisekedi, declaring himself "the only legitimate president."

Fayulu called for nationwide protest in rejection of the court's decision.

Read more: Who is Felix Tshisekedi, DR Congo's president-elect?

Tshisekedi's supporters celebrated the ruling in the streets of Kinshasa on Sunday.

jcg/sms (AFP, dpa, Reuters)

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