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Brussels terror attacks: What we know so far
At least 30 people were killed and almost 250 injured in Tuesday's terror attacks on Brussels airport and Maelbeek metro station. Here is what we know so far...
Zaventem: Two explosions occurred in short succession in the departures hall at Brussels airport at approximately 8am on Tuesday. Firefighters said 14 people were killed and 106 injured. A third, unexploded, bomb was later found in the search of the terminal building. Almost 1,000 people were present in the hall at the time of the attack. Some 600 flights were cancelled. The two suicide bombers have been identified as Khalim and Ibrahim El Bakraoui, Belgian broadcaster RTBF reported on Wednesday, citing police sources. The brothers, aged 27 and 30 respectively, were wanted by police in connection with the Paris terror attacks and could have been the two people who fled the scene of a police raid in Forest last week.
Maelbeek: A bomb exploded on a metro train at 9.11am as it was leaving Maelbeek station in the direction of Arts-Loi. The Federal Crisis Centre said "about 20" people were killed and 130 injured.
Suspect 'on the run'
Investigators issued a photograph (above) of a man they are urgently seeking, on suspicion of being involved in the Brussels airport attack. The screengrab, taken from videosurveillance at the airport's departure hall, shows a man in a white jacket and dark hat pushing a luggage trolley. He was filmed alongside two other men wearing black, who are suspected of setting off the explosions in the terminal building. Belgian federal prosecutor Frederick Van Leeuw said it was "likely that two of the three suspects at the airport killed themselves and third is on the run".
Terror threat level raised
Prime minister Charles Michel said the level 4 terror alert - meaning a real and imminent threat - remains in place for as long as deemed necessary. A new assessment by Belgium's Co-ordinating Body for Threat Analysis, OCAM, will be carried out on Wednesday morning.
Residents of Brussels are expressing their grief with messages in chalk on the pedestrian zone, outside the Bourse. King Philippe of Belgium said in a televised address that his country would respond to the threat "firmly, calmly and with dignity". Describing the attacks as "cowardly and odious", King Philippe said he and his wife Mathilde shared their sorrow with those who have lost a loved one or who were injured. He praised the work of the emergency services and gave thanks to "all those who spontaneously offered help". Prime minister Charles Michel and European Commission president Jean-Claude Juncker joined a vigil in downtown Brussels on Tuesday evening. Michel earlier said: "This is the most tragic attack that Belgium has ever seen. We are determined to do everything possible to safeguard our freedoms. Our freedom was struck in the heart this morning in Brussels, as it has been before in Paris, London and Madrid." Brussels mayor Yvan Mayeur said there was "a huge job ahead of us to rebuild Brussels an open and cosmopolitan city". Monuments in other European cities have been lit up in the colours of the Belgian flag in a sign of solidarity.
Islamic State claims responsibility
The Islamic State has claimed responsibility for the attacks - but Belgian federal prosecutor Frederick Van Leeuw said their claim could not yet be verified and it was also too early to confirm a link with the Paris attacks. A statement published by the A'maq news agency, which is linked to the extremist group, said: "Islamic State fighters carried out a series of bombings with explosive belts and devices on Tuesday, targeting an airport and a central metro station in the center of the Belgian capital Brussels, a country participating in the international coalition against the Islamic State. Islamic State fighters opened fire inside Zaventem Airport, before several of them detonated their explosive belts, as a martyrdom bomber detonated his explosive belt in the Maalbeek metro station. The attacks resulted in more than 230 dead and wounded."
Schaerbeek raid: nail bomb
Police instructed the media to not divulge any location details of house searches to avoid jeopardising the investigation. The Belgian federal prosecutor later confirmed that an explosive device, chemicals and an Islamic State flag were found at an address raided in Schaerbeek.
Belgian interior minister Jan Jambon has declared three days of national mourning, running until Thursday, with a minute's silence at midday on Wednesday. Shopping centres and public markets should be open as usual, albeit with some reinforced security patrols. Starbucks - where the airport bombs were reportedly detonated - has closed its Belgian stores until further notice. Public transport started returning to normal on Tuesday evening. Schuman, Luxembourg and Brussels Airport SNCB stations remain closed. The STIB is updating this page with the latest on which lines are running. Brussels airport says it is "impossible to say when operations will be resumed". Ryanair has moved its Zaventem flights to Charleroi. Tour operators are trying to reschedule Easter holiday flights from other regional airports such as Ostend and Liège. Schools in the Brussels region will open as usual on Wednesday. The Federal Crisis Centre said: "Schools can get back to the normal situation. Citizens should remain vigilant." An additional 225 members of the Belgian military have been called in to the capital to provide reinforcement, and there are tougher border controls.