Governor Sonko commented on a funeral parish that included Okoth's Italian-born wife, whom he met at college in Austria and with whom he had no children.
Sonko's words inadvertently touched a nerve, provoked criticism among some politicians, and split opinion in this deeply religious and conservative society, where such family affairs are likely to be broadcast only in the privacy of the home.
CNN's efforts to ask Sonko and his associates to comment were unsuccessful. When asked about the governor's comments, Okoth's brother Imran Okoth told CNN, "No comment, it's a personal matter." The alleged mother of Okoth's child declined to comment.
Nairobians immediately went into social media with the hashtag #Sonko, jokingly warning one another not to share their secrets with the governor, who would inevitably reveal them in a very public manner.
Sonko, who has three children, is best described as an outsider operator. But his comments reflect a very real problem in Kenya, where many children go through life without fatherly support.
On Friday Sonko announced on Facebook that he had received numerous complaints from women via his hotline. His "investigation", as he described it, revealed that many politicians had impregnated their girlfriends and "refused to take responsibility for their babies [for]."
Sonko said that evidence of some of these violations would soon be published in newspapers and on his Facebook page. None of these allegations could be verified by CNN.
The consequences of Sonko's funeral remarks spread to Kenya's capital. Has the governor been right to so publicly expose the alleged infidelity of his friend the legislator?
Brandish Kotia, a restaurant owner, told CNN: "What Sonko did was not right, it's family matters, they could have just talked, there was no need to make it so public."
Mary, a shopkeeper in the Westlands District of Nairobi who refused to give her last name because she was sensitive to politicians, agreed with Sonko, "This will be a lesson for everyone." There are too many hiding places, and if They are trying to tell the men they do not want to hear about it, but now everyone will be watchful. "
The men CNN spoke with largely refused to comment and shook their heads at the audacity of the governor. "He's leaving us men," a taxi driver said before he set off.