London's Queen Elizabeth Park says casualties being treated after release of gas

Londcon: Londcon's Queen Elizabeth Olympic Park said on Wednesday there had been an incident involving the release of a gas at its aquatics centre and a number of casualties with breathing difficulties were being treated.

The London Ambulance Service said on Twitter it was responding to an incident at the park, adding that it had a number of resources at the scene.  The area has been cordoned off and evacuated, it added.