Six of the 13 students accused of burning a dormitory at Kikumini Secondary School in Makueni County will remain in police custody until July 6, a Makindu court ruled Thursday.
The court released seven other boys on Sh10, 000 bond each.
The students were arrested on May 13 and 14 after a dormitory at the school was set on fire.
While explaining the decision to continue locking the six boys, Ms Damaris Karani, a resident magistrate at Makindu Law Courts, termed as serious the cases the students were facing.
Ms Karani ordered that the students be locked up at Emali Police Station until July 6 when a pre-bail report will be produced in court.
Ms Karani ordered the mother of another suspect who skipped court to bring him to court or assist police to him.
"If by any chance you have decided to hide your son the court will take the full force of the law," Ms Karani warned.
She added: "In case you know where your son, kindly avail him at the police station. If you don't you the whereabouts of your son, assist the police to arrest him".