A video of ODM leader Raila Odinga looking frail while speaking to mourners in Kisii has sparked concern.
He moved to the podium limping, and his speech was slurred.
He nearly fell as he left the podium after addressing mourners, prompting his aides and security team to intervene.
Aoko Otieno, a vocal blogger, shared the video on Twitter and accused selfish billionaires led by Former President Uhuru Kenyatta and media mogul SK Macharia of exploiting Raila despite his advanced age.
Raila has previously traveled outside of the country to seek specialized medical care.
View the video.