An 18-year-old man has been charged over an incident at a Mandurah high school.
Police say they received a report of two "unregistered visitors" entering John Tonkin College on Education Drive in Greenfields around 11am on Tuesday, May 27.
The pair had been involved in an altercation before the school placed the campus into lockdown.
The neighbouring South Metropolitan TAFE campus was also sent into lockdown.
"Staff members instructed the unregistered visitors to leave the school grounds, and they left the area," a WA Police spokesperson said.
"Nobody was injured during the incident."
An 18-year-old has since been charged with one count of being armed or pretending to be armed in a way that may cause fear and one count of trespass.
He is due to appear before the Mandurah Magistrates Court on June 24.
Community invited to name crane towers building new Mandurah Hospital
Hundreds of volunteers remove 525kgs of rubbish from Mandurah's waterways
Port Kennedy man fined $4.2k for failing to feed horse
Rockingham General Hospital patients face the longest waits for elective surgery
Australian-first drone technology to monitor emergencies, crimes in Baldivis, Kwinana, Rockingham
Teen accused of ordering firebomb attack on Baldivis tobacco shop
City of Mandurah sees sharp rise in animal cruelty reports
Geoff Valentine returns to Peel Thunder as senior coach
Golden Bay woman charged with lacing colleague's curry lunch with snail poison