He described the terrorists as cowards and mindless criminals who had failed in their evil mission of instilling fear among Kenyans and the nation.
"The unfortunate incident by the cowards brought us closer as Kenyans and strengthened our resolve to fight terrorism more aggressively," Kenyatta said during a funeral service of his nephew and his nephew's fiancee in Nairobi.
At least 59 people continued to be missing till Friday, six days after the terror attack on a mall in Nairobi, the Kenya Red Cross Society said. The attack on the upscale Westgate shopping mall was carried out last Saturday and ended four days later.
Kenyatta praised Kenyans for standing together and refusing to be intimidated by perpetrators of the Westgate Mall terror attack.
His remarks came as Interior Cabinet Secretary Joseph Ole Lenku said the police were holding eight suspects, while adding that of the 11 suspects arrested, three were interrogated and released.
Uhuru: Terrorists were cowards and mindless criminals who had failed
Kenya's Interior Cabinet Secretary Joseph Ole Lenku told the media Friday that the death toll from the terror attack stood at 67, including 61 civilians and six security officers.
According to India's external affairs ministry, four Indian nationals were among those killed.
However, dozens of Kenyan-Indians have also lost their lives, as well as businesses. Third generation Indians are dominant residents in the area where the mall is located.