The death toll in the Kenyan school fire has risen to 64 as four more students have died from their burns.
The four boys succumbed to their injuries at Kenyatta National Hospital in Nairobi.
Eight more victims of the fire remain at the hospital in a serious condition.
Hospital spokesperson Naftali Mungai said: "The hospital is so sorry to have lost these patients. Most of them had very high degree burns."
Police are still investigating the fire on Monday morning at Kyanguli Secondary School in Machakos, 30 miles southeast of Nairobi.
Students believe the gasoline-fuelled fire was set by fellow pupils angry over the annulment of final exam results and demands that they pay back school fees.
Police spokesman Peter Kimanthi says arson is strongly suspected, but there are no firm suspects so far.
There were 139 students in the poorly maintained buildings. One of the two doors to the 40-meter (132-foot) by 15-meter (50-foot) building was locked, trapping half of the students behind a wall of flames, survivors say.
The students could not escape through the windows because they had metal bars.
The parents of the 58 boys who were killed in the blaze have decided to hold a mass burial for those burnt beyond recognition, says Kenya's Minister of Education.