Kenyan presidential candidate Uhuru Kenyatta has accused Britain's High Commissioner to Kenya as having a "shadowy, sinister" involvement in the country's election.
The Daily Telegraph reports the candidate claims there has been am "abnormally high influx of British military personnel in the country, which began around voting day."
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Political parties across the country suspended their General Election campaigns following the Manchester Arena terror attack on Monday.
Investigators believe Mr Kushner has significant information relevant to their inquiry, officials told NBC News.
The men were detained as part of an investigation by MI5 and the Metropolitan Police's Counter Terrorism Command.