Europe is on high alert after recent terrorist attacks as police shut down a U.K. airport after finding an apparent firearm.
Tensions are high all over Europe after the terrorist attacks in Paris Friday evening.
Police in the U.K. reportedly evacuated a terminal in Gatwick Airport after the discovery of a "suspicious article."
Police were called to the airport after witnesses saw a man discarding what was described as a "suspicious item," according to a police spokeswoman.
Sussex Police detained a Frenchman after what appeared to be a firearm was found at the airport.
Sussex Police said in a statement, "Personal items and what appears to be a firearm were recovered ... However, the viability of the weapon has yet to be established."
The BBC reports Dutch authorities also grounded a plane bound for France because of a threatening tweet. They also announced strict security protocol for traffic entering or leaving France.
This video includes images from Getty Images, Tim Unwin and Manuel de Luque.