A suspected CS tear gas spray was found at London City Airport after passengers and staff were evacuated Friday following a "chemical incident" that left 27 travellers feeling unwell and halted flights. London's innermost airport re-opened three hours after the incident was first reported, after 500 people were evacuated and several passengers treated for breathing difficulties. A search of the airport "led to the discovery of what is believed to be a CS gas or spray", Scotland Yard police headquarters said in a statement.
