Brussels-South railway station
A spokesman for the Belgian Federal Prosecutor's Office announced on 22 August that they had launched an investigation into the attempted attack. They consider that Belgium is involved due to the heavily armed perpetrator having boarded the train at Brussels-South railway station. In October 2017, Belgian police announced that after conducting six searches, they had charged two additional people identified as Mohamed Bakkali who was accused of leading a terrorist group and Youssef Siraj as being a group member involved in the attack. They were transported to France for prosecution.