Local media report that the boy - said to be from nearby South Sudan - was lynched by residents of a nearby refugee camp who stormed the police station where he was being held.
Gunmen shot dead seven people, including six students, in a raid on a high school early on Saturday 14 October that appeared to be a revenge attack by a student who had been suspended for fighting, a Kenya police official said. "I also pray for a quick recovery of those injured", the Head of State stated through his twitter account.
"We can not confirm the number until we liaise with the hospital", Mr Matata told journalists in Lodwar town, the county's capital, before leaving for the school, which is about 200 kilometres from the Kenya-South Sudan border. "They proceeded to the boys' dormitory where he shot dead five other students selectively", said Musyambo.
Musyambo said that security officers responded to the attack immediately and pursued the suspects who hadcrossed the border to South Sudan.
While condoling with the parents, teachers and students, Turkana Governor Josphat Nanok asked the national government to allocate boarding schools armed security personnel. "He also injured several girls in their dormitory", said Musyambo.
The students were in school preparing for their national exams when the attack occurred.