The top official is one the several personnel that the National Super Alliance presidential leader, Raila Odinga, demanded leaves the commission before he can agree to participate in the fresh presidential poll, now set to be held on October 26.
Earlier, Mr Odinga had said that should Mr Kenyatta defeat him in the fresh election, he would accept and move on. The increased security presence comes a day after Chief Justice David Maraga publicly complained that Inspector of Police Joseph Boinett had ignored their calls to enhance security to judicial officers and the court. "We are unable to validate the result". "He was in the front line fighting against the rigging of the election", he added. "We do not need to look far for examples". "The [board] can not, therefore, be said to have verified the results", she noted.
Kenya's deputy chief justice, Philomena Mwilu, said that the court's order for the commission to open its servers had given it a "golden opportunity" to debunk claims by the opposition leader, ... "Such acts are not only unlawful but savage in nature".
Since the judges annulled the presidential election Kenyatta and his supporters have launched a series of verbal attacks on the judiciary, with Kenyatta calling the judges "crooks" and threatening to "fix" the courts. While admitting that "no election is ideal", the judges in the majority said that IEBC had disregarded electoral laws and behaved as if they "did not exist". President Uhuru Kenyatta promised to respect the ruling although he has repeatedly criticised it harshly.
The court's detailed judgment given on Wednesday hinged on the failure of the election board to check electronic tallies, which are vulnerable to typos, against paper forms intended as a fail-safe backup before announcing results.
As the Supreme Court delivered its full judgement, police used tear gas to disperse rival groups of protesters who had gathered outside the courthouse.
Police dispersed the rowdy Jubilee and NASA coalition supporters to stop them from clashing.
In response to Tuesday's demonstrations, Maraga said that he and other members of the legal body which selects judges were "prepared to pay the ultimate price to protect the constitution and the rule of law".
Should the commission fail to organise an acceptable new poll, Kenya will face a constitutional crisis.
The Kenyan president criticized the court for emphasizing the processes in the elections that were deemed flawed rather than taking into account the number of votes that secured his victory.