Emergency service personnel have treated 30 people after London City Airport was evacuated over a “chemical incident”.
At least 500 people were told to leave the airport and Transport for London have been warning travellers to expect “long delays”.
The airport tweeted: “Airport has now reopened. We thank passengers for their patience, access to terminal will be staggered & disruption to flights expected.”
“We sent a number of resources to the scene including two single responders in cars, four ambulance crews, an incident response officer and our Hazardous Area Response Team (medics specially trained to treat people in hazardous situations).
“We are treating 26 patients at the scene for difficulty breathing, two patients have been taken to hospital.”
This is the sort of potential terrorism attack that is feared by the Western World but authorities have stressed they are not either ruling anything in or out yet.
This story is developing.