UPDATE: Chemical Incident At King's Lynn College
8:26am 10th November 2014
(Updated 8:26am 10th November 2014)
A police investigation will continue this morning to try and find out what caused more than 30 people to have difficulty breathing at the College of West Anglia on Friday.
One Person was taken to hospital, while the rest were looked over by paramedics at the scene.
It happened at around 11.30am and affected the main Front Block at the site.
The East of England Ambulance Service initially called in the Hazardous Area Response Team and the Magpas air ambulance as a precaution.
Principal David Pomfret says they're still not clear on what happened:
"We’re not 100% sure of the cause but what we can say is that we are working very closely with the emergency services, and in particular the police, to make sure we identify the cause of the incident."
Anyone with any information should call the police on 101.