The Kenya High Commission in London on Thursday closed early as NASA supporters protested outside.
This was the second time NASA supporters were holding a demonstration in London.
"We just saw the national flag beingl lowered and the entrance door shut when we started to assemble outside," said Geroge Osore, the chairman and leader of the demonstration.
Asked why they were demonstrating, Osore said: "We are protesting against the sham election going on in Kenya. We are saying we are not party to it. We have seen innocent Kenyans killed. This is the start of resistance and civil disobedience."
There were about 70 demonstrators waving placards with messages: "Uhuru must go", "We need justice" and "Stop police killings".
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Some were using hand-held loud speakers during the protest at the embassy’s parking on the Portland Place.
A statement read during the demonstration, which was licensed to be held between 2pm and 4pm, said the Independent Electoral and Boundaries Commission had failed to conduct the elections in a manner consistent with the Constitution and would not deliver credible election.
The statement urged the British government to intervene to end the crisis in Kenya by initiating dialogue among political antagonists.