Brussels – The Belgian authorities on Thursday released four persons after questioning them in connection with terrorist attack on Brussels Central station, the Federal Prosecutor’s Office, has said.
The police said no one was killed or injured in the blast, allegedly set off by 36-year-old Moroccan man on Tuesday night.
The suspect, who carried a suitcase filled with nails and gas bottles, was shot dead by a soldier at the scene.
Investigators searched four houses, including one in Molenbeek, the much-maligned neighbourhood in Western Brussels, where several perpetrators in previous Paris and Brussels attacks were known to have lived.
A judge decided not to indict the four persons who were detained and released them.
Europe had been rocked by several terrorist attacks during the past three years.
The attacks included coordinated bombings and gunfire in Paris in November 2015 in which 130 people were killed and a vehicle attack in Nice in July 2016 that killed 86 people.
In the past three months alone, the cities of London and Manchester witnessed three separate attacks.
The Belgian capital was hit last March, when coordinated suicide attacks at Brussels airport and inside a metro station left 35 people dead.
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