Emergency services were called to Emerson Park School on Wingletye Lane in Hornchurch, Essex, just before 2 PM on Wednesday after reports that CS gas had been released in a classroom, leading to the exposure of 25 students and several teaching staff.
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Officers from the Metropolitan Police, alongside crews from the London Ambulance Service (LAS), Hazardous Area Response Teams (HART), and the London Fire Brigade, quickly arrived at the scene. Several students were treated for the effects of the gas, with some reportedly taken to the hospital.
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The extent of the injuries is still unclear, but no serious harm has been confirmed at this time.

One bystander, waiting to collect her children, described the scene as alarming, with emergency services working rapidly to attend to those affected.

The circumstances surrounding how the gas was released and who was responsible remain unknown. The Metropolitan Police are investigating, and further updates are expected as more information becomes available. It has not yet been confirmed if any arrests have been made in connection with the incident.

Parents and guardians have been notified, and the school is working with local authorities to ensure the safety and well-being of students and staff. The school is expected to provide additional updates as the investigation progresses.
UPDATE 3.31pm : A London Ambulance Service spokesperson said: “We were called at 1.20pm today (Wednesday 9 October) to reports of an incident in Wych Elm Road, Hornchurch.
“We sent a number of resources to the scene, including ambulance crews, a paramedic in a fast response car, members of our Hazardous Area Response Team (HART) and an incident response officer. “The first of our crews arrived in four minutes. “Our crews assessed one adult and six teenagers, before discharging them at the scene.”
UPDATE:3.51pm
We have reached out the the Headteacher of Emerson Park School who has rushed to discuss the incident or issue a statement
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