In statement issued shortly after the Independent Electoral and Boundaries Commission announced Kenyatta as victor of the 8 August general election, Museveni said he is confident that his counterpart Kenyatta will continue with the efforts of promoting unity and development of Kenyans. Officials had announced on July 31 that Msando had been tortured and killed.
A security official said nine young men shot dead in the Mathare district overnight have now been bought to the city morgue.
After late night looting and riots, anger remained high Saturday morning, with running battles in the capital's Mathare and Kibera slums.
Kenyatta, who promised to create 1.3 million jobs, got 54% of the vote to secure a second five-year term; Odinga, who vowed to fight corruption, received 45%.
One father said his nine-year-old daughter was killed by a stray bullet while on their third-floor balcony in Mathare. "She was my only hope".
A top Kenyan official says life has largely returned to normal following disputed elections, although he acknowledges some "incidents of lawlessness" in several opposition areas where protests are occurring.
The acting interior minister called reports of protester deaths "lies", saying most of the demonstrators are criminals taking advantage of the chaos.
Two more fatal shootings have also been confirmed on the outskirts of Kisumu, an area where opposition leader Raila Odinga enjoys strong support. A senior traffic police officer said "there were four people killed when they were hit by vehicles while celebrating".
"The Independent Policing and Oversight Authority (IPOA) must immediately launch an independent and effective investigation into reported killings and where there is credible evidence of crimes, those responsible must be brought to justice", said Muthoni Wanyeki, Amnesty International's Regional Director for East Africa, the Horn and the Great Lakes.
She's among up to twelve people reportedly shot dead during demonstrations in the western city of Kisumu and slums around Nairobi.
In Nairobi slums loyal to Mr Odinga, police opened fire to disperse protesters who blocked roads and set up burning barricades.
"The police should not use tear gas or live ammunition simply because they consider a gathering unlawful".
The election commission affirmed there was a hacking attempt but said it failed, and that Odinga's camp had no right to declare him the victor.