Police have arrested some nane nane protesters along Tom Mboya street in Nairobi's Central Business District.
The protesters had arrived in the city on Thursday to take part in the anticipated demonstrations.
They were nabbed almost immediately by police, some who were in civilian clothes.
They were bundled into a standby police vehicle.
There is heavy deployment of anti-riot police officers ahead of the anticipated demos.
On Tuesday, acting Inspector General of Police Gilbert Masengeli assured of the police's preparedness to maintain peace across the country.
Speaking at the National Police Service Campus, Embakasi, after talks with regional police bosses, Masengeli said security will be heightened across the country though not to an extent that is out of the ordinary.
"Every Kenyan as per the law has liberty to demonstrate, picket and assemble as per the law. That one everyone is very much aware of and where the privilege of one ends is where the other starts," he said.
Masengeli said Kenyans are at liberty to demonstrate but peacefully and reiterated that they all have to live by the rule of law.
"We are governed by the Rome statute and the Kenyan Constitution," he said and affirmed that criminal elements will be dealt with firmly.
"On Gen Zs, they have a message and they have been heard. It is upon us now to differentiate between Gen Zs and opportunists who take advantage of those riots to cause mayhem, destruction of property and acts of violence that are not allowed by the Law."