The attacks at Zaventem Airport were confirmed as terrorism. The attack at the airport was reportedly accompanied by shouts in Arabic and gunfire, and an unexploded suicide belt was reportedly found in the aftermath.

Belgium’s federal prosecutor confirmed the blasts at the airport were caused by a suicide attack. The explosion at the metro station was near buildings that house European Union institutions in central Brussels.

Immediately following the blast at the Metro station, transportation authorities shut down the entire subway system. Thirty minutes later, the officials suspended all public transportation, including trams and buses.