Brussels attacks aftermath: Here is everything we know

At least 31 people have been killed and 250 more have been injured after three explosions hit Brussels at rush hour on Tuesday morning.

Here's what we know now:

• Brothers Khalid and Brahim el-Bakraoui have been named among the attackers

• A manhunt is currently underway for the third suspect, Najim Laachraoui, who was identified by a Belgian newspaper as the third man in an airport CCTV image handed out by police.

• Reports from Belgian media indicated Wednesday morning that Najim Laachraoui had been arrested in Anderlecht, and have been subsequently been withdrawn.

• Local police denied reports that Laachraoui had been arrested, saying that armed police had arrested one person at a house in the Brussels district of Anderlecht, which was not the suspected bombmaker.

• According to La Derniere Heure, prosecutors have said Laachraoui’s DNA was found in houses used by the Paris attackers last year, and he is thought to have travelled to Hungary in September with the Paris attacks prime suspect Salah Abdeslam, who was arrested on Friday

• Belgium will observe three days of mourning following the attacks, and a minute's silence for the victims was held at midday today, (11am GMT). The silence was also observed in UK government buildings, while whitehall flags are currently flying at half-mast, and the Belgian flag is flying at half-mast over Downing Street.

• Isis has claimed responsibility for the attacks

• Police in Brussels raided homes in the Schaerbeek districts last night to find suspects, finding a nail bomb, chemical products and an Isis flag. Belgian authorities have said that two or more men could be on the run

• Belgian newspaper HLN reported that a taxi driver approached police, saying he believed he unwittingly drove the bombers to the airport

• David Cameron will hold an emergency second Cobra meeting on Wednesday morning in response to the attacks

• While the official death toll remains at 31, it has been reported by news agencies that the figure could be 34

Here's what was reported yesterday:

Two loud explosions were reported at the departure lounge of Brussels' main airport at around 7.20am (GMT).

Around an hour later reports emerged of separate explosions on the city's metro system.

All three explosions have been deemed "terrorist attacks" by Belgium's federal prosecutor and Isis supporters have since claimed responsibility.

Airport

• At least 11 were killed and around 100 were injured in the two blasts at Zaventem airport.

• The Belga news agency reports eyewitnesses saying there was gunfire and shouting in Arabic before the explosions

• Images and video from the scene showed smoke rising from the terminal building and dozens of people fleeing the airport

• Several reports say the blasts occurred at the American Airlines check-in desk

• The Belgian interior minister has raised the country's terror threat level to its maximum

• The incident comes just days after the arrest of Salah Abdeslam, one of the main suspects of the terror attacks that killed 130 people in Paris in November, in the Molenbeek neighbourhood of Brussels

• Flight tracking apps showed all flights being diverted away from Brussels

• Reuters reports that all flights into and out of the airport have been suspended until 6am on Wednesday

Metro

• The BBC reports that roughly 20 people died following a suicide attack at Maalbeek metro station, near the EU headquarters

• Images on social media showed smoke rising from the building

• The city's metro system was shut down at around 8.30am (GMT), according to Reuters

What's been said?

Belgian prime minister Charles Michel said:

What we feared has happened, we were hit by blind attacks...

This is a dark moment for our nation. We need calm and solidarity.

David Cameron said the British government will do "everything we can to help" and he is convening the government's emergency Cobra committee on Tuesday morning:

Labour leader Jeremy Corbyn said:

London mayor Boris Johnson said there was no increased imminent threat to the British capital but that a police presence would be ramped up to reassure people.

The people of Paris, home to two major terror attacks in 2015, showed their solidarity:

We are wholeheartedly with the Belgian people. Paris think of you. #Bruxelles

Dutch Prime Minister Mark Rutte said:

[Belgium has] again been hit by cowardly and murderous attacks. Our hearts go out to the victims and next of kin. The Netherlands stands ready to help and support our southern neighbours in any possible way.

Others used the attacks as an excuse to push their political agenda...

Follow live updates from Brussels over on the Independent