Police in Kisumu turned against journalists and observers monitoring how they are handling demonstrators.
Local and international journalists were blocked from covering the running battles between police and protesters in Kondele and Carwash estates.
The officers chased journalists and observers immediately they started to use live bullets on the protesters.
Residents poured into the streets demanding transparency in the poll process following alleged manipulation of the presidential results.
A journalist, who declined to be named, said the officers ordered them not to take their photos and videos.
He said the police threatened to shoot them if they dare captured the running battles.
A Kenya Broadcasting Cooperation journalist said he was harassed and intimidated by police at Carwash estate.
GSU officers confiscated his phone and deleted all photos and videos before they released him.
There were protests in Homa Bay and Kisumu after provisional results showed Jubilee’s Uhuru Kenyatta ahead of Nasa’s Raila Odinga.
There were also protests in Nairobi's Mathare informal settlements following the results stalemate.