UPDATE ON THE BRUSSELS TERROR ATTACKS

Update on Brussels Attack At least 31 people have been killed and many seriously injured in attacks at Brussels international airport and a city metro station. Twin blasts hit Zaventem airport at 07:00 GMT, killing 11 and injuring 81, Belgium's health minister said. Another explosion struck Maelbeek metro station an hour later. Twenty people were killed, Brussels mayor Yvan Mayeur said. Belgium has now raised its terrorism threat to its highest level. The attacks come four days after Salah Abdeslam, the main fugitive in the Paris attacks, was seized in Brussels. Prime Minister Charles Michel called the latest attacks "blind, violent and cowardly", adding: "This is a day of tragedy, a black day... I would like to call on everyone to show calmness and solidarity". European Council president Donald Tusk said: "These attacks mark another low by the terrorists in the service of hatred and violence." US President Barack Obama called the blasts "outrageous attacks against innocent people". The airport and the entire public transport system in Brussels are closed. Belgian police have issued a wanted notice for a suspect after bomb attacks at Brussels' main airport and a metro station left more than 30 people dead. The man is suspected of involvement in the twin explosions which tore through Zaventem airport. He was seen on CCTV pushing a trolley through the airport with two other suspects. Both those men are believed to have died in the blasts, possibly by detonating suicide devices. So-called Islamic State (IS) said it was behind both the attacks in the Belgian capital. An online statement from the group said the locations were "carefully selected" and warned of worse to come for "Crusader states allied against the Islamic State".