The Belgian capital of Brussels is on its highest terror alert level due to fears of an attack similar to the recent ones in Paris.
The Belgian Interior Ministry is warning of "a serious and imminent threat" to the region and is advising the public to avoid spaces with large groups such as sporting events and train stations. The city's subway service is shut down.
This comes after police conducted several raids in Belgium while on the hunt for people suspected to be involved in the Paris attacks.
Turkish officials recently arrested Ahmet Dahmani, a 26-year-old Belgian man suspected of helping scout locations for the Paris attacks.
Two Syrians were also taken into custody. Authorities believe they were trying to help Dahmani get to Syria.
Officials are still on the hunt for Salah Abdeslam, who is believed to have participated in the attacks. According to multiple reports, Abdeslam is believed to be hiding somewhere in Belgium.
This video includes images from Getty Images.