Airport, then metro, an hour apart
The Brussels bombings struck two separate locations within a little over an hour of each other on the morning of 22 March 2016. Two suicide bombers detonated explosives at Brussels Airport in Zaventem at 07:58, and a third attacker set off a device at Maelbeek metro station, roughly ten kilometres away in central Brussels, at 09:11. This staggered timing, striking a major international airport first and then a busy metro station serving commuters shortly afterward, reflected a deliberate choice to hit two different kinds of high-traffic infrastructure in succession rather than attempting to coordinate every explosion within the same narrow window, as the November Paris attacks four months earlier had done.
The same cell that hit Paris
What makes the Brussels bombings inseparable from the earlier Paris attacks is that all five attackers involved on 22 March had also been directly involved in planning and executing the November 2015 assault. Ibrahim El Bakraoui and Najim Laachraoui detonated their bombs at the airport, and Khalid El Bakraoui, Ibrahim’s brother, detonated his device at the metro station; all three died in their own explosions. This overlap in personnel means the two attacks are best understood not as separate, unrelated incidents but as two operations carried out in sequence by essentially the same continuous network, one that had simply not been fully dismantled after the Paris attacks despite the intensive manhunt that followed them.
An arrest that may have forced their hand
Belgian investigators have suggested that the timing of the Brussels attack may not have been entirely of the cell’s own choosing. Salah Abdeslam, the surviving Paris attacker who had spent more than four months evading capture, was finally arrested in the Molenbeek district of Brussels on 18 March 2016, just four days before the Brussels bombings took place. Investigators believe this arrest may have hastened the Brussels operation, on the theory that the remaining cell members, aware that Abdeslam’s capture and likely interrogation increased the risk of their own exposure, moved to carry out their attack before authorities could act on any information he might provide about the network’s remaining members and plans.
Two who fled without detonating
Not every attacker involved that day succeeded, or even attempted, to detonate their own device. Mohamed Abrini, a childhood friend of Abdeslam who had also been involved in the Paris attacks, and Osama Krayem, a Swedish national of Palestinian descent, both fled the scenes of their intended attacks without setting off the explosives they were carrying. Both men were arrested roughly sixteen days after the bombings, giving investigators two additional cell members in custody who had been directly present at the attack sites but had, for reasons the available record does not fully explain, chosen not to complete their part of the operation as apparently planned.
Thirty-two dead, later revised upward
The confirmed death toll from the bombings stood initially at 32 civilians killed, with more than three hundred others injured, alongside the three attackers who died in their own explosions. That figure was later revised upward to 35 once three additional people who died in the years following the attack were formally recognised as qualifying victims of the bombings, a reminder that the human cost of a mass-casualty attack of this kind can continue to be tallied and revised for years after the immediate event, as injuries sustained during the attack eventually contribute to deaths recorded well after the initial casualty count has otherwise been finalised.
A parliamentary inquiry finds the gaps
In the aftermath, a Belgian parliamentary commission examined how the same cell responsible for the Paris attacks had been able to continue operating within Belgium for months afterward and ultimately carry out a second major attack. The inquiry identified serious failures in security coordination between different Belgian agencies, gaps in information-sharing about known or suspected extremists, and broader shortcomings in the country’s counter-terrorism prevention efforts. These findings pointed to systemic institutional weaknesses rather than a single missed warning or isolated error, helping explain how a network already under intense international scrutiny following one major attack was nonetheless able to execute a second one within the same country only four months later.