A crime lab in Brussels was attacked when a vehicle rammed through barriers and got close enough to building and detonate a bomb and set a fire. Terrorism is being down played for now. Building burned held DNA evidence and it might be criminals destroying evidence.
https://www.theguardian.com/world/2016/aug/29/bomb-brussels-institute-criminology-belgium-car
https://www.theguardian.com/world/2016/aug/29/bomb-brussels-institute-criminology-belgium-car