A school in Sydney's west entered lockdown this afternoon after a student was allegedly found with a knife.
NSW Police and NSW Ambulances attended Chifley College at St Mary's at 1.20pm today following reports that a student had brought a knife to the school.
Police confirmed a staff member suffered a small laceration while trying to disarm the student.
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The student has been taken to hospital for assessment.
No students were injured.
It's understood the lockdown has since been lifted.
Investigations into the incident continue.