Migori Governor Okoth Obado will spend the weekend in custody awaiting his arraignment on Monday.
Obado was arrested on Friday after being questioned by detectives at the Directorate of Criminal Investigations (DCI) headquarters over the murder of Rongo University student Sharon Otieno.
Obado arrived at the DCI headquarters accompanied by his lawyer Cliff Ombeta after he was summoned to answer emerging issues in the case.
Obado who is being held at Gigiri police station recently admitted to fathering the baby Sharon was carrying at the time of her death.
He had however indicated that he had nothing to do with her killing.