Hundreds of losing presidential candidate Prabowo Subianto supporters gathered near the Constitutional Court in Central Jakarta on Wednesday morning, demanding that the justices deliver a “fair verdict” for a lawsuit filed to challenge the victory of incumbent President Joko “Jokowi” Widodo.

The protesters, who assembled around 10 a.m. near the Arjuna Wijaya Statue on Jl. Medan Merdeka Barat, will begin a rally themed "Halalbihalal and Tahlil Akbar 266", which is expected to end at 6 p.m.

The groups that will participate in the rally include the National Movement to Safeguard Fatwas (GNPF) and the 212 Alumni that had demanded prosecution of former Jakarta governor Basuki Tjahaja Purnama. The rally has been coordinated by former Corruption Eradication Commission (KPK) adviser Abdullah Hehamahua.

"Allahuakbar! Let's fight in God's way! We hope the court will make a fair decision based on the truth," the protesters said.

“If the court does not rule fairly, we will proceed to the National Commission on Human Rights,” said Abdullah.

The court is scheduled to rule on Prabowo’s petition, in which he accused the General Elections Commission (KPU) of inflating votes for the incumbent, on Thursday or by June 28 at the latest.

The police have prepared a water barrier and barbed wire around the area. The groups are not allowed to rally in front of the court. .

"We didn't issue a permit for a rally in front of the court. Only in this area," said Central Jakarta Police chief Sr. Comr. Harry Kurniawan.