PARIS (AP) — Two French girls, aged 15 and 17, have been captured by a security net that authorities are using to ferret out citizens who are considering traveling to other countries to join jihads.

The action is one example of how France is taking judicial action against citizens suspected of seeking careers as foreign fighters, even if they have yet to leave French soil. Thousands of European citizens have made the trip to Syrian battlegrounds, but there is no unified plan of action in Europe.