Key roads in the city have been barricaded as Kenyans return to the streets in the capital, Nairobi and elsewhere around the country to mark the first anniversary of the deadly anti-government protests that peaked with the storming of parliament, leaving at least 60 people dead.

In Nairobi, motorists were being turned away at checkpoints some distance from the city centre, with people only allowed to proceed on foot.

Many businesses in the city centre remain shut for fear of being targeted for looting or getting damaged in the demonstrations.

There is a heavy deployment of security officers all around the city and in key state installations, including parliament and around State House, the president's official residence.

Ahead of the protests, parliament had been barricaded with razor wire to prevent protesters from getting in.

Police in Kenya have fired tear gas to disperse thousands of demonstrators who have taken to the streets in the country's major cities to mark the first anniversary of anti-government protests that culminated in the storming of parliament.

Businesses and schools in the capital, Nairobi, have been closed due to fears of violence and looting.

The protests come a year after the unprecedented demonstrations that saw parliament breached and over 60 people killed, with no convictions made so far sparking calls for justice and accountability.