Kenyans lined up on Moi Avenue on Saturday hoping to see US President Barack Obama, who is expected to visit the August 7 Memorial Park in Nairobi.
Haile Selassie Avenue, Moi Avenue, Tom Mboya Street, Harambee Avenue and Landhies Road were closed as early as 8am.
Security was tight as officers manned the Moi Avenue-Harambee Avenue junction.
Human rights activist Fred Omondi was among those who waited along Moi Avenue.
He donned clothes with Kenyan flags and was entertaining onlookers.
“Obey the security officers or face arrest. You will be in cells until Monday if you don’t,” he said on a microphone.