© Luke AndrewsPolice at the school in Wythenshawe
Students were taken ill after a child brought 'pepper spray' into a secondary school in Wythenshawe.
It is understood at least one person was taken to hospital following an incident at Manchester Health Academy, on Moor Road, on Friday morning.
A spokeswoman for Greater Manchester Police said it is believed pepper spray was brought into the school by a student.
No further details about the incident have been released at this stage.
The North West Ambulance Service said a patient from the school was taken to hospital in an ambulance. It is not clear if this was a student or a staff member.
Greater Manchester Fire and Rescue Crews were also seen parked up outside the school building, also known as Brookway High School, just before 11am.
A text message sent to parents from the school said some students have suffered a reaction after an 'aerosol' was brought into school. © Provided by Trinity Mirror Shared Services Limited
The message said: "There has been an incident in school this morning whereby a student has brought an aerosol into school which has caused a reaction amongst some students.
"This incident has been dealt with by Mr Green. All students are safe.
"If the spray has caused a reaction for your child, you will have been notified separately. We will continue to monitor students throughout the day."
The M.E.N has contacted Manchester Health Academy for a comment.