A secondary school student Thursday pleaded guilty to possessing bhang after 45 of them were arrested for being drunk and engaging in sexual activities in a public vehicle.
The other students were released without charges yesterday after spending the night in the cells.
The girl, a Form Four student at Kanyama Secondary School in Karatina, will be remanded in custody until August 11 when a social enquiry report will be presented in court.
The students, from Mukurwe-ini Boys, Kaheti Boys, Kanjuri Boys, Kanyama Secondary and others, were arrested after the public complained about their behaviour.
Kanyama Principal Christopher Mugambi said the students, who were going home for the holidays, hired a bus to take them to Nairobi.
At Kiangwachi, the bus was stopped by traffic police.
“Their bus was seized and the students were locked up,” said Mr Mugambi.
The principal said a girl from his school confessed that after the police stopped the bus, a boy from Mukurwe-ini Boys Secondary school gave her a roll of bhang to throw away through the window but the police got hold of them.
“I was notified of the incident and I proceeded to the station accompanied by a teacher to investigate the case.
"I found four girls students from my school in custody among about 45 others”, Mr Mugambi said.
He added that they returned three of the students to be accommodated at the school where the parents were to picked them, the other one was left with the parent at the police station for further investigations.