Belgian policemen stand guard while a vehicle and an ambulance leave during a police action in the Molenbeek-Saint-Jean district in Brussels, on March 18, 2016. A police operation was underway on March 18, in the Brussels area home to key Paris attacks suspect Salah Abdeslam whose fingerprints were found in an apartment raided this week, the federal prosecutor's office said. / AFP / JOHN THYS (Photo credit should read JOHN THYS/AFP/Getty Images)

Belgian policemen stand guard while a vehicle and an ambulance leave during a police action in the Molenbeek-Saint-Jean district in Brussels, on March 18, 2016. 
A police operation was underway on March 18, in the Brussels area home to key Paris attacks suspect Salah Abdeslam whose fingerprints were found in an apartment raided this week, the federal prosecutor's office said.   / AFP / JOHN THYS        (Photo credit should read JOHN THYS/AFP/Getty Images)