In a statement sent to a mainstream local station, Governor Sonko stated that he will reject the security detail provided to him by the government and would instead make his personal arrangements for his own security.
Kenyans have been reacting to the dramatic move, especially on social media platforms.
The residents of Garissa have also been quick to weigh in on the developments in Nairobi given its importance as the capital city of Kenya.
The vast majority of the residents in North Eastern Kenya county said they wanted to see an amicable resolution of the issues.
Here are some of their reactions:
''That the governor of Nairobi has reached the point of making personal arrangements for his security shows that this is serious,'' Latif Omar said.
''The government was wrong to downsize Sonko's security. For God's sake, Sonko is the governor of the capital city of Kenya.
''Sonko should stop the unnecessary theatrics and go back to City Hall and work for Nairobians,'' Sukre Amin said.
''I just hope that whatever differences there are, they will be resolved amicably,'' Galgalo Mohamed said.
''May Allah intervene,'' Sadar Bulo said.
''You know when Nairobi suffers, the rest of the country suffers. That is why we as residents of Garissa are concerned,'' Jasmin Kuro said.
''We the people of Garissa want to see things moving smoothly in Nairobi,'' Salo Ahmed said.
The flamboyant governor has sensationally claimed that his life is in danger as some people in government are plotting to eliminate him.