Brussels, Belgium (CNN)Explosions and gunfire rang out Friday afternoon around Brussels -- the focal point in Europe's fight against terrorism following the bloody attacks there just three days ago.
A major police operation took place in the Brussels district of Schaerbeek, the same area from which a taxi driver on Tuesday picked up three men and brought them to Brussels Airport. There, two of those carried out suicide bombings while authorities think the other escaped; about an hour later, a fresh blast rocked a train near the Maelbeek metro station.
Heavily armed police pushed people from around a cordoned part of Schaerbeek. That closed-off area continually increased in size as more and more police cars rushed through.
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