Raila's arrival sparked a fresh wave of protests in the CBD hours after police contained the situation.
Azimio leaders led by Raila were blocked from accessing the CBD.
Security has, however, been heightened along the City Hall way with KICC and Supreme Court being inaccessible to anyone.
Both plain clothe and uniformed police officers have been reinforced in the streets.
Earlier in the day, a number of protesters defying the order not to engage in the demo were arrested.
Rowdy youths have been pelting police vehicles with stones with police responding by lobbing teargas canisters.
Protestors also stoned a vehicle owned by a media house that was ferrying media personnel covering the demo.
Raila was expected to address the media from 2.30 pm after he had a meeting with other Azimio La Umoja leaders.
Nairobi and Kisumu have been the most affected.
Before the protests began, Raila had called on Kenyan to awaken the spirit of fighting oppressive regimes as they have done in the past.
He clarified that the match to the president's office is not about any tribe, race or religion, but it's all about the well-being of Kenyans.
Raila's planned address, however, failed to materialise following a confrontation with police.
