AP Images
An undated photo of Salah Abdeslam.
The multiple bombings in Brussels on Tuesday, which killed at least 31 people and wounded 300, were carried out by men linked to Abdeslam, according to prosecutors.
Abdeslam was arrested last Friday, three days before the attacks.
"He was not aware," several Belgian media outlets quoted Sven Mary as saying on Thursday.
At least 30 people were reported killed and dozens more wounded after explosions ripped throughZaventem Airport and a metro station in Brussels on Tuesday morning.
The attacks came days after Abdeslam was arrested in the Belgian capital, which is also the de facto capital of the European Union.
Prosecutors say they have linked Abdeslam to the Brussels attacks, however, noting that his fingerprints were found in a Brussels apartment that had been rented out by one of the suspected Brussels bombers.
Police have identified Belgian national Ibrahim El Bakraoui and his brother, Khalid El Bakraoui, as two of the suicide bombers responsible for Tuesday's attack. Ibrahim can be seen in the center of an image captured from the airport's CCTV. The man to the left of him is Najim Laachraoui, who has been tentatively identified as the second airport bomber.
Belgian Federal Police
His bag apparently contained the largest of the three explosives that were brought to the airport. That explosive did not go off with the other two and was detonated in a controlled explosion by the police.
In a suicide note found by Belgian police on a discarded laptop, Ibrahim El Bakraoui apparently wrote in French that he was in "a bad situation" and that, if he did not act immediately, he would end up in a prison cell "like him."
Experts say the note likely alludes to the arrest of Salah Abdeslam.