Several people were killed in an explosion at Maelbeek metro station, Brussels, around 09:15 (08:15 GMT) on Tuesday. The metro station is less than a kilometre away from European Union buildings in the centre of the Belgian capital.The blast came only an hour after two explosions ripped through Zaventem airport in Brussels.The airport is currently on lockdown, with rail transport stopped and incoming flights diverted to Antwerp and other locations. Belgium has raised its terror threat to its highest level.Video ID: 20160322-025Video on Demand: www.ruptly.tv Contact: cd@ruptly.tvTwitter: twitter.com/Ruptly Facebook: www.facebook.com/Ruptly LiveLeak: www.liveleak.com/c/Ruptly Vine: https://vine.co/Ruptly Instagram: www.instagram.com/Ruptly YouTube: www.youtube.com/user/RuptlyTV DailyMotion: www.dailymotion.com/ruptly