Two crews (Broughton, West Ashland) alongside two officers attended.
Firefighters were called to a carbon monoxide leak within a three storey terrace property.
Carbon monoxide levels within the property read highs of 12 parts per million on the gad monitor.
One adult and four children were assessed by South Central Ambulance service for suspected carbon monoxide posisioning.
Firefighters isolated the gas and ventilated the property.
Firefighters used:
- Two breathing apparatus sets
- Gas monitor
- Short extension ladder
- Thermal imaging camera
- One hose reel jet