Abrini made the admission yesterday, on the day he was charged with terrorist murders over the November attacks in Paris which left 130 people dead, prosecutors said.
Terror suspect Osama Krayem, a Swedish national, received the same charges over his role in a suicide bombing at a Brussels metro station on March 22, which occurred an hour after the airport blasts. A total of 32 people died in the coordinated attacks.
The latest arrests strengthened the theory that the same cell carried out both France and Belgium's worst-ever terror outrages, claimed by the Islamic State group.
The pair were among six arrested in raids across Brussels on Friday. Two were later released but the two others were charged with complicity for allegedly helping Abrini and Krayem.

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