The prosecutor at the International Criminal Court (ICC) has asked for an adjournment in the trial of Kenyan President Uhuru Kenyatta.
Fatou Bensouda said the loss of two key witnesses meant the case currently “does not satisfy the high evidentiary standards required”.
The trial was due to begin in February.
Mr Kenyatta denies charges of organising ethnic violence after the 2007 election in which some 1,200 people died.
Ms Bensouda said a key witness had recently indicated he was no longer willing to testify and another witness admitted “giving false evidence regarding a critical event in the Prosecution’s case”.
She said she now needed time to “complete efforts to obtain additional evidence, and to consider whether such evidence will enable my Office to fully meet the evidentiary threshold required at trial”.
Addressing “the people of Kenya”, she said “my decision… was not taken lightly… I have and will continue to do all that I can to realise justice for the victims of the 2007-2008 post-election violence”.