Ethics and Anti Corruption Commission has summoned Nairobi County chief Mike Sonko.
Sonko was summoned by the anti-graft agency following graft allegations against him by Nairobi Women Rep Esther Passaris.
After their public fallout in June this year, Passaris called on the EACC, DCI and NCIC to investigate allegations that she received per diem twice for the same trip.
The letter from EACC stated: "The commission would like you to respond to these allegations and record a statement regarding the same."
Ms Passaris said none of the accusations and insinuations by Governor Sonko during a live TV show against her is true.
Sonko replied to the summons by EACC saying that he would present himself after attending the memorial services of the late Governor Joyce Laboso and the late Mp for Kibra Ken Okoth.
Sonko responds to EACC summons
"I acknowledge receipt of summons by the EACC relating to alleged utterances I made, directed to Hon. Esther Passaris."
"I will be honouring the said summons by individually presenting myself to Integrity Centre immediately after the ongoing Memorial Services of my colleague, the late Bomet Governor, Dr Joyce Laboso and the late Mp for Kibra Hon. Ken Okoth," Sonko said.
The Nairobi County chief posted on Facebook that he would step down from office if found to have a case to answer in the allegations made by Passaris.
He said: "I want to categorically state that, in the event, it is established that I have a case to answer before the law, I am ready to step aside to allow the EACC complete investigations and determination of the matter."