An undisclosed number of students in B.C.'s Kamloops School District are under investigation for what police are calling "the alleged exchange of inappropriate material" online.

The police were called to investigate after school district staff learned about the incident, which involves students from throughout the school district.

Police wouldn't specifically say what crime they are investigating or if the material was sexual or violent in nature, but said charges could involve anything from production and distribution of child pornography to threatening behaviour.

But due to the age of those involved and the nature of the investigation, investigators said they are unable to release any more details about the incident.

"At this point it is too early to categorize the nature of this investigation or to comment on any specific details," said as statement issued by Cpl. Cheryl Bush on Tuesday.

"We are dealing with people under the age of 18, and will restrict our comments accordingly, as per legislation."

Police confirmed Wednesday morning that the students' parents have been informed of the investigation.

School district superintendent Terry Sullivan said the district will do whatever the police investigation requires.

"The message to parents remains the same, that you need to be engaged with your children’s online and social media activities. This can lead to tough or uncomfortable conversations, but these conversations are critical," said Bush.