Emergency workers confirmed that 19 people have been hospitalised for "minor breathing irritation" after a chemical leak at a leisure centre in St Andrews today.
While none of the injuries are life-threatening, the fire service said it was still being treated as a "major incident".
The Scottish Fire and Rescue Service and the Scottish Ambulance Service (SAS) responded to an emergency call from the East Sands Leisure Centre, after the alarm was raised just after 1pm.
The fire service said in an emailed statement that it sent 13 vehicles, 55 firefighters, and "three breathing apparatus teams in gas-tight suits to isolate the power in the plant room and search the building".
The leaked chemical is reportedly sodium hypochloride, which is used as a disinfectant in swimming pools.
The centre has been evacuated and emergency workers wearing hazardous material suits were seen entering the building.
A spokesperson for the Scottish Ambulance Service told BuzzFeed News: "We are currently dealing with multiple casualties."
The spokesperson said that "at this time" no one was thought to be in a serious condition.
The ambulance service received an emergency call at 13.08 and an ambulance was on the scene within seven minutes, they said.
Neither the ambulance nor the fire service would release further details of those affected.
The leisure centre, which has a gym and swimming pool, is on the east side of St Andrews.
Patrick Smith is a senior reporter for BuzzFeed News and is based in London.
Contact Patrick Smith at email@example.com.
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