A Hamilton high school was plunged into lockdown just before midday today after a young man started threatening staff and damaging the school's property.
Melville High School principal Clive Hamill said he placed the school in lockdown at 11.45am due to "significant concerns for student safety".
A young man had threatened staff, vandalised property and walked around the school in a menacingly and intimidating manner, Hamill posted on the school's Facebook page.
"Despite several attempts by teachers, senior leadership team and the young man's friends, we were not able to stop his dangerous and threatening behaviour."
