As of Sunday morning, Deputy President William Ruto was slightly ahead of his rival Raila Odinga, data from the Independent Electoral and Boundaries Commission (IEBC) showed, before cutting off the live feed displaying the percentage of votes won by both men.
The IEBC, which has now tallied votes from over 70 percent of constituencies, did not give an explanation for the decision.
But a running tally at the Daily Nation newspaper, citing the official data, said Ruto had so far scored 52.54 percent of the vote, while Odinga had 46.78 percent.
Tuesday’s vote passed off largely peacefully but after previous elections sparked deadly violence and rigging claims, the IEBC is under intense pressure to deliver a clean poll and release results by Tuesday.
Riot police were deployed overnight inside the commission’s heavily guarded tallying centre in the capital Nairobi after political party agents disrupted the process, hurling rigging allegations at each other.
IEBC chairman Wafula Chebukati has accused party agents of delaying the tallying process by haranguing election workers with unnecessary questions.
More than a dozen civil society groups, trade unions as well as the Kenyan chapters of Amnesty International and Transparency International issued a statement Sunday urging calm.
“We call on all political candidates, their supporters and the public to exercise restraint. We must all avoid raising tensions that could easily trigger violence,” the 14 organisations said.