Thousands of police officers were deployed to guard Jakarta's Constitutional Court where a hearing began into the opposition's complaints in the morning.
President Joko Widodo was declared the poll winner with 55.5 per cent of the votes. Former military general Prabowo Subianto, however, claimed that he won the elections but was denied victory through electoral fraud.
Constitutional Court Chief Justice Anwar Usman said in a televised speech that the court would not succumb to anyone, was not afraid of anyone and would not be influenced by anyone, Efe news reported.
He added that the judges' only duty was towards the Constitution as per their oath of office.
The head of Prabowo's legal team, Bambang Widjojanto, presented arguments including that of the incompatibility of the vice-presidential candidature of Widodo's running-mate, cleric Maruf Amin, who held posts in two government banking institutions during the same period.
Prabowo has repeatedly complained of massive and systematic irregularities in the vote counting - in which he received 44.5 per cent support - and electoral lists, making allegations even months before the polls.
Electoral fraud was ruled out last month by the Elections Supervisory Agency.
After the announcement of official results on May 21, the former general's supporters held massive protests in the capital, which were followed by two days of violent clashes in which nine people were killed, while hundreds were injured and more than 200 were arrested.
This is the second time that Prabowo has challenged election results in the court, having lost a similar appeal after losing to Widodo in the 2014 elections.
The hearings are set to end on June 24 and the deadline for the verdict has been set for June 28.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)