An alleged jihadist Najim Laachraoui has been arrested in Anderlecht, a suburb of Brussels, the Belgian media reported on Wednesday.
He is suspected of involvement in the attack at Brussels airport on Tuesday, according to local daily newspaper La Libre Belgique, Xinhua news agency reported.
At least 34 people were killed and over 200 injured in Tuesday's explosions at the main airport of Brussels and in a Metro station.