Several children have been hospitalised after a carbon monoxide leak poisoned them at a daycare in Pennsylvania, US.
Early reports claim that every ambulance in Allentown rushed to Happy Smiles Learning Center after the leak was discovered.
Several children were taken away on stretchers.
All are reported to be in stable condition.
Authorities declared a level 1 mass casualty, meaning there are warnings medical responders could become overwhelmed by the number of casualties.
A call for medical help was first received in relation to an unconscious child in the incident at Happy Smiles Learning Center on Wabash Street early on Tuesday morning, October 11.
