Belgian media which earlier reported the arrest on Wednesday of a prime suspect in Tuesday\’s bomb attacks in Brussels said the person detained was not, in fact, Najim Laachraoui.
La Libre Belgique newspaper said another person had been arrested. DH, which first reported the story, also said the man detained in the Anderlecht district had been misidentified.
Police and prosecutors have been declining all comment but will hold a news conference at noon GMT.
Belgian police on Wednesday arrested Najim Laachraoui, a key suspect in the deadly bomb attacks on Brussels airport, Belgian media reported on Tuesday.
La Derniere Heure newspaper and broadcaster RTL said he had been arrested in the Anderlecht district of Brussels, adding that he was the third man pictured in CCTV footage alongside two suicide bombers who blew themselves up on Tuesday.
Two of the other attackers have been named in Belgian media as the brothers Khalid and Brahim el-Bakraoui.
Twin explosions at the airport and another at a metro station on Tuesday left about 34 dead and 250 wounded.
Belgium is observing three days of national mourning.
So-called Islamic State (IS) has said it was behind the attacks and warned that more would follow.
SOURCE: AFP and agencies