Indonesia’s opposition party says President Joko Widodo’s election victory was made possible through “systematic electoral fraud and abuse of power.”
Their lawyers made the argument to the Constitutional Court on Friday.
Security was tightened at the court as the country’s opposition party took their latest step to push for fresh elections.
Last month’s vote ended with Widodo beating Prabowo Subianto by 11 percentage points, according to the General Election Commission.
However his opponent has refused to concede defeat and is instead calling for fresh countrywide elections.
Indonesia is the world's third biggest democracy.

US carrying out rescue effort after losing aircraft in Iraq
Suspect shot dead after crashing truck into Detroit-area synagogue
Iran's supreme leader, in first remarks, vows to keep strait closed
FBI investigating fatal Virginia university shooting as act of terrorism
Four Bahrainis arrested for spying for Iranian Guard
Two US sailors injured after non-combat fire aboard carrier in Red Sea
First train to Pyongyang in six years leaves Beijing as neighbours revive link
Six vessels attacked in Gulf, Strait of Hormuz
