Nairobi County Secretary Pauline Kahiga was on Tuesday arrested at City Hall by Ethics and Anti-Corruption Commission (EACC) operatives.
Drama at City Hall as Sonko's secretary is arrested
Push and shove at City Hall
The dramatic arrest took over an hour as the EACC detectives tried to penetrate barricades put up by City Hall guards.
Reporters at the scene were also kicked out by the county security officers as they tried to document the events.
Ms Kahiga was later led out of her office and into one of the vehicles EACC officials had arrived in and some documents were carried out of her office.
EACC explains County Secretary Kahiga's arrest
EACC spokesperson Yasin Amaro explained that the county official had been accused of hiding crucial evidence that could uncover corruption at the county offices.
Governor Mike Sonko is himself under probe by EACC over the source of his wealth.
The office of the county secretary is the central point for all major county operations by the county's executive administration as well as acting as the secretary to the county cabinet.
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