"It is in response to the Children's Commissioner's report that said significant numbers of young people are at risk of being exploited.
"I think (the risk) has always been there but we have not been as aware of it as we are now."
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Hundreds of passengers were ordered to leave the terminal building and flights grounded after passengers suffered difficulties breathing.
Council leaders today called on the government to provide extra money to help resettle the youngsters in the capital.
An eyewitness said: "It was very unnerving. It was just after 12pm and there were suddenly police vans and cars everywhere."