Kenya’s opposition leader has urged people to stay away from work on Monday over the disputed election result.
Raila Odinga said it would be a “day of mourning for the fallen patriots” after a rally in Kibera, the largest slum in the capital Nairobi.
The international community has urged calm following the vote, which Mr Odinga alleges was fixed.
The official results gave President Uhuru Kenyatta 54.3%, and Mr Odinga 44.7%.
The allegation has sparked violent protests, with news agency AFP reporting at least 16 people killed since Friday. On Saturday, the Kenya National Commission on Human Rights said 24 people had been shot dead during protests since election day on 8 August.
It is unclear how much these two figures overlap.
The victims included a nine-year-old girl hit by a stray bullet in Nairobi’s Mathere slum.
Kenyatta: The digital president
Odinga: Love him or loathe him
The men of violence making a fresh start
Kenyans celebrate #GitheriMan voter
In a tweet sent after the rally, Mr Odinga said they had died at the hands of “Jubilee mandated death squads”, referring to Mr Kenyata’s party.
A man was also killed in Kisumu county, an opposition stronghold and the centre of post-election ethnic violence in 2007, when 1,200 people died and 600,000 were displaced.
Kenya election: Raila Odinga urges supporters to strike