BREAKING NEWS

Report: Additional explosion heard inside Brussels' metro station

An explosion was heard at Maelbeek metro station in Brussels, close to the EU institutions, Belgian broadcaster RTBF said, after explosions ripped through the departure hall at Brussels airport.
Metro operator STIB announced on Twitter that the metro was closing.
The Belgium government announced shortly after the airport blasts that the country was on its maximum terror alert.
All metro stations have been closed, according to the Belgium Transit Authority.