COLLIE police are investigating an incident in which three primary school students were pricked with a needle from a diabetic testing device another student had brought in from home.
Collie Senior Sergeant Mike Dean said police and child protection representatives were called to the school on Tuesday morning, and they had responded following a "series of threatening behaviours" by the 10-year-old student.
He said the child was too young to be charged.
"Child protection and police are working closely with the child's carers," Snr Sgt Dean said.
The school issued a statement in response to the incident.
"On March 18, 2014 three students at St Brigid's Collie, reported an incident to a teacher involving contact by another student with an object," the statement read.
"The object used was found to be a diabetic testing device brought from home.
"Parents of the affected students were notified.
"The safety and wellbeing of all students within the St Brigid's community is of the highest priority and the staff take every possible precaution to ensure the school is a safe environment for all students."
The school said it was not able to comment on the enrolment status of its students, however the Collie Mail understands the student no longer attends the school.