The court announced it will instead hold a hearing Feb. 5 the day President Uhuru Kenyatta's trial was to have started into prosecutors' request for a three-month adjournment in the case, and a request by the president to have the case thrown out altogether.
The delay is the latest setback in the case against Kenyatta, who insists he is innocent of all charges against him.
Prosecutors asked for a delay in the case in December after one witness pulled out and another admitted giving false evidence.
"Having carefully considered my evidence and the impact of the two withdrawals, I have come to the conclusion that currently the case against Mr Kenyatta does not satisfy the high evidentiary standards required at trial," she said.
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In a decision issued today, judges revealed that Kenyatta's defence team filed a confidential request on Jan. 13 for the court to "terminate the proceedings ... On the grounds of insufficiency of evidence."
No further details of the defence request were available. Judges ordered Kenyatta's lawyers to file a public version by Jan. 28. Kenyatta's defence team last year also asked for the case to be thrown out.
Kenya's deputy president, William Ruto, already is on trial at the ICC on similar charges. He has pleaded innocent.