Deadly attacks Tuesday at the Brussels airport and a metro station in the city are the latest in a string of attacks in Europe in recent years.

Terror alert led restaurants and bars to shut early amid fears of a Paris-style attack in Central Brussels. The manhunt continues for the fugitive Salah Abdeslam, who is thought to be armed with a suicide belt.

A pianist plays John Lennon's ‘Imagine’ on a portable piano at a memorial close to the Bataclan concert hall in Paris where at 89 people were killed.