A 17-year-old student from Gloucestershire arrested in connection with child sex offences in February has been arrested again, police have said.
The boy, from Downfield Sixth Form in Stroud, was held on suspicion of using the internet to commit sexual offences against numerous children.
Gloucestershire Police said he had been released on bail pending further inquiries following the latest arrest.
Police said they had no information any children had been harmed in schools.
A police spokeswoman said: "Police are continuing to work closely with the school where the youth had attended as well as Gloucestershire County Council and Social Services in order to share information and safeguard children.
"No information has come to light that suggests any children have been harmed in schools, but the schools have acted appropriately and taken immediate action to safeguard pupils and ensure parents of the children involved are supported.
"As part of this investigation the police and social care are continuing to work jointly to speak to a number of children and their parents both to support the children and to progress the investigation."
Downfield Sixth Form is shared between Marling Grammar School for Boys and Stroud High School for Girls.
The institution also takes in students from other schools and colleges in the area.