General Service Unit (GSU) officers on Monday were forced to disperse Azimio La Umoja supporters who had camped outside the Milimani Law Courts.
The coalition is expected to file a presidential petition challenging President-elect William Ruto's win.
The Azimio supporters were seen causing commotion around the court where the Azimio team is expected to file a petition.
Head of security at the Judiciary Lazarus Opicho and his deputy Winfrida Rotich have been conducting recce on the operations ahead to ensure things go smoothly.
Af of 11 am, the Raila Odinga led coalition had filed the petition online.
The DP was declared the winner of the August 9 presidential poll after he garnered 7,176,141 votes, equivalent to 50.59% of valid votes cast, beating former Prime Minister Raila Odinga who had 6,942,930 votes representing 48.85%.
Raila has since disputed the results, claiming there were election malpractices that the Supreme Court needs to have a look into.
Unlike the previous presidential election petitions, the Apex court moved from its tradition of hearing the petition from the Supreme Court Building in Nairobi's central business district.
Judiciary has announced that judges of all levels including the Supreme Court were prepared to handle election disputes.
Azimio coalition has up to 2 pm to file the petition.
