The main surviving suspect in the attacks, Najim Laachraoui, has been arrested in the south-west Brussels suburb of Anderlecht, according to Belgian media.
The state broadcaster RTBF said there had been an arrest in Anderlecht in connection with the attacks, but it could not confirm whether Laachraoui was the suspect.
L’Echo is also reporting Laachraoui’s arrest, along with radio stations RTL and Nieuws+.
Other media outlets in Belgium are independently reporting the arrest of Najim Laachraoui in Anderlecht, Oliver Milne reports.
Flemish-speaking journalist Michael Sephilha reported the added detail that the suspect had been arrested in a pizza restaurant.