Four people have been taken in for questioning following the fatal brawl at Zaventem station on Friday afternoon.
One person was allowed to leave after being questioned, while the other three will be presented to the investigating judge later in the day, the public prosecutor’s office said.
They are three young people from Brussels: a 22-year-old from Berchem-Ste-Agathe, a 20-year-old from Etterbeek and a 19-year-old from Anderlecht.
On Friday, a mid-afternoon brawl between two gangs on the platforms of Zaventem station led to the death of a young man hit by a high-speed train.
Three people fell on the rails, with only one of the three youngsters managing to get off the track as the train approached.
One person died on the spot, a 22-year-old man from Etterbeek. Another young man, a 16-year-old from Brussels, was seriously injured.
The third individual involved is on the run and has not yet been identified, the prosecutor’s office said.
The police issued a call for witnesses on Saturday to clarify the circumstances of the event.
In the meantime messages have appeared on social networks, raising fears of reprisals.
The public prosecutor’s office says local and federal police are closely monitoring events.
