Kiambu Governor Ferdinand Waititu's wife, Susan Wangari Ndung'u, had to spend a night at Lang'ata Women's Prison even after posting the requisite cash bail of Ksh4 million.
A report by K24 indicated that she could not be set free because she was not able to surrender her passport to the court.
The broadcaster further revealed that Waititu's wife has never had a passport.
As such, her lawyer John Sakwa was asked to present a written letter from the immigration department to prove that she does not hold a passport.
Sakwa is expected to present the letter on Wednesday, July 31.
On the other hand, her husband was taken to Industrial Area Remand Prison after he failed to raise the required Ksh15 million in time.
The two were charged on Monday over Ksh588 million irregular tender alongside eight others implicated in the procurement law violation.
In the ruling, Magistrate Lawrence Mugambi gave the embattled governor and his wife three distinct conditions to ensure their freedom.
First, the governor was locked out of his public office until further notice, to give way for further investigations.
Waititu was also ordered to submit his travel documents with the relevant authorities.
