There are reports of a fourth explosion in Brussels this morning

Another evacuation is reportedly taking place in Brussels.

Belgian media are reporting that a fourth, controlled explosion has taken place this morning in Brussels, following this morning's attacks on Zaventem Airport and on two Metro stations. The controlled explosion took place at Wetstraat, a a principal road running through central and eastern Brussels. https://twitter.com/MatthewKeysLive/status/712224689679011840 https://twitter.com/MatthewKeysLive/status/712225201769975808 Police have confirmed that 15 people died at Maelbeek Metro station, close to the EU Headquarters. Meanwhile, across the border in France, 1,600 extra police officers have been deployed at both borders and on public transport. According to RTÉ, 400 additional police officers will boost security in the greater Paris area, and military patrols will be refocused on public transport sites.