Britain will introduce new laws on Tuesday to try to stop airlines carrying passengers who may be travelling to join Islamic State militants in Syria and Iraq, a junior minister said on Sunday.
Security services estimate some 600 Britons have gone to Syria or Iraq to join militant groups, including the man known as "Jihadi John" who has appeared in several Islamic State beheading videos.
Under the proposed new laws, Home Secretary Theresa May would be able to prevent airlines from carrying passengers, including children, believed to be travelling to take part in "terrorism-related activity" on known routes, such as those into Syria, according to a Home Office statement.
"It will also enhance our ability to monitor and control the actions of those who pose a threat," he added.
The new powers are part of Britain's efforts to stop foreign fighters from entering Syria via commercial flights and come weeks after three London schoolgirls fled Britain to join up with Islamic State through Turkey.
Prime Minister David Cameron has also urged internet firms to do more to tackle online extremism after it was revealed the three girls had used Twitter to contact other women involved with Islamic State.
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