Censor.NET informs citing The Independent.
In a statement released through one of its propaganda outlets, the so-called Islamic State said "explosive belts and devices" were used to massacre passengers checking in at Brussels Airport and on a metro train.
"Islamic State fighters opened fire inside Zaventem Airport, before several of them detonated their explosive belts, as a martyrdom bomber detonated his explosive belt in the Maalbeek Metro station," a spokesperson said.
The group claimed that the attacks left more than 230 dead and wounded, although Belgian authorities put the figure slightly lower at at least 31 killed and under 200 injured.
It said Belgium was targeted as "a country participating in the international coalition against the Islamic State".
The timing of the attacks, coming days after the arrest of Paris attacks suspect Salah Abdeslam was considered significant but no mention of the captured militant was made.
Related materials: Attacks in Brussels