Paramedics were called to a Gold Coast high school three times in one day after four girls became ill from an unknown prescription drug.
It's not known if the Southport State High School girls took the drug together or at different times throughout the day.
The first call to Queensland Ambulance Service was at 8.30am on Friday when one girl fell ill.
By 12.15 pm paramedics had returned to the school after two other girls became sick.
The final call came at 1.30 pm when the fourth girl fell ill, a Queensland Ambulance Service spokesman said.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
All four girls in their mid teens were taken to Gold Coast University Hospital in a stable condition.
One girl has since been released.
A school-based police officer attended the scene but no investigation has commenced into the incident, a police spokesman told AAP.
Southport State High School has been contacted for comment.
