Following the recent suicide attacks in Brussels, some officials said that the city was unprepared for acts of terrorism.
ISIS has claimed responsibility for the bombings that struck the Belgian capital’s airport and metro. At least 31 people have been killed and dozens were injured. Since the attack, the city has been on lockdown and has increased security.
European officials said they had been bracing for a major assault and also warned that ISIS was getting ready to attack.
The magnitude of the Brussels attacks suggests that it may have been planned for some time.