Police are holding a man in custody who has been accused of using Susan Samoei's name who is the younger sister to the Deputy President William Samoei Ruto to obtain money illegally.
The man is said to have acquired money amounting to Sh89,000 from DP Ruto sister's friends.
The man was arrested in Eldoret town on Monday then was transported to Nairobi by the police.
He has been accused of tarnishing Susan Samoei's name to obtain the cash fraudulently.
According to a local daily Susan Samoei, DP Ruto's younger sibling raised concerns to the police that an unknown person had been sending messages to her friends demanding money from them.
The Police investigations indicated that the man who spent the night at the Central Police Station in Nairobi had swapped Samoei's SIM card and captured its details before using it for illegal activities.
"He was arrested and booked in by security attached to the DP. We are pursuing the case further to establish how many people he has conned"," a police source was quoted by the Standard.