Former Nairobi Governor Mike Mbuvi Sonko has been thrown to Kamiti Maximum GK Prison ahead of his appearance in Kiambu court on Thursday.
Sonko is also scheduled to face terrorism charges.
One of his lawyers Assa Nyakundi said police wants to hold Sonko for 30 days.
Sonko is being guarded by officers from the Anti-Terrorism Police Unit.
He is accused of recruiting a militia which is likely to destabilize country’s security.
The DCI wants to detain him for 30 days pending investigations.
Sonko is also accused of procuring military uniform, which he has previously been spotted wearing in contravention of the rules governing its use.
“That the military attire is associated with terrorist groups which pose a threat to threat to national security, and hence need to have the suspect detained for comprehensive investigations.”
Sonko is accused of arming his personal security agents with full military attire.
“That I have intelligence information that the suspect is connected to financing of terrorism activities and he is in the advanced stage of procuring arms and ammunition.”
“That the suspect is under investigation and is likely to be charged for very serious charges arising from the Prevention of Terrorism Act.”
Sonko had earlier appeared at the Milimani law courts for corruption related charges.
Chief magistrate Douglas Ogoti directed that he be taken to Gigiri cells ahead of his appearance in Kiambu over his application to be released on bail.