UK Home Office is bringing in new laws this week in an attempt to prevent airlines from carrying potential passengers who could join Islamic State militants in Syria and Iraq.
As per the proposed laws, Home Secretary Theresa May will be able to stop airlines from carrying passengers, including children, if they are suspected of travelling to take part in activities related to terrorism in places like Syria.
The move comes weeks after three London schoolgirls fled to join the Islamic State through Turkey. It has been estimated that close to 600 Britons have gone to Syria or Iraq with the intention of joining militant groups.
UK immigration and security minister James Brokenshire said in a statement: "This important legislation will disrupt the ability of people to travel abroad to fight and then return.
"It will also enhance our ability to monitor and control the actions of those who pose a threat."
As per the new rules, airlines would need to ask for permission to carry passengers who could be a threat. They need to provide an automatic system based on passenger lists that would flag high-risk travellers and stop them from boarding aircrafts.
Recently, the Guardian reported that the three schoolgirls were among 60 British women, including 18 teenagers who are believed to have travelled to Syria to join Isis militants.
After being criticised for failing to prevent the teenagers from boarding the flight, Turkish Airlines had previously said it was helping government investigation into the case but added that it was only responsible for checking visas.
Prime Minister David Cameron has also urged internet firms to take up more stringent steps to stop online extremism after it was revealed that the three London girls had used Twitter to get in touch with extremists.