Kisumu Governor Anyang' Nyong'o is recovering at Aga Khan University hospital in Nairobi after a surgery on his left arm.
A statement by his communication secretary Aloice Ager on Friday stated that Prof Nyong'o slipped Tuesday evening and fell on a pavement while walking and fractured his left arm.
"With excruciating pain, he consulted a doctor in Nyeri and an X-ray was performed, revealing the fracture of the humerus bone," read the statement.
Mr Ager said the Governor was in Nyeri County on Tuesday evening to attend the 2nd National Universal Health Conference.
"Yesterday (Wednesday), he addressed the conference in the morning wearing a sling on his left arm."
Last year, Prof Nyong'o underwent a hipbone surgery at the University of California Hospital in San Francisco.