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Brussels explosions: UK police step up patrols after attacks Brussels explosions: David Cameron condemns 'savage' attacks
(35 minutes later)
Police numbers have been stepped up at key UK locations after the terror attacks in Brussels, which are feared to have killed at least 26 people. David Cameron has condemned terror attacks in Brussels as "appalling and savage" as the UK steps up security.
The blasts hit Brussels Airport and a metro station shortly after 07:00 GMT. Britain faces "a very real terror threat", the PM said, announcing extra patrols at ports, airports, Tube stations and major railway stations.
It is understood one British person may have been injured, London Mayor Boris Johnson said. The blasts, which are feared to have killed at least 26 people, hit Brussels Airport and a metro station in the city shortly after 07:00 GMT.
The UK's senior counter-terror officer said raising security was a precaution. The Foreign Office is advising Britons in Belgium to avoid crowds. One UK national has been injured in the airport attack, Downing Street said.
The UK's senior counter-terror officer said raising security was a precaution. The Foreign Office is advising Britons in Brussels to avoid crowds.
It has also issued an emergency number - 020 7008 0000.It has also issued an emergency number - 020 7008 0000.
Prime Minister David Cameron chaired an emergency Cobra meeting to determine the UK's response to the explosions. Brussels explosions 'leave 20 dead'
Brussels blasts - latest updates
In Pictures: Brussels blasts
Belgian Prime Minister Charles Michel told a press conference "scores" of people had been killed or injured in the attacks at the airport and Maelbeek metro station.Belgian Prime Minister Charles Michel told a press conference "scores" of people had been killed or injured in the attacks at the airport and Maelbeek metro station.
The Belgian government has not confirmed casualty numbers. Brussels transport officials said 15 died at Maelbeek and media have reported up to 13 dead at the airport terminal. The Belgian government has not confirmed casualty numbers. Brussels transport officials said 15 died at Maelbeek and the Belgian health minister said 11 were killed at the airport.
The Belgian prosecutor said it was "probably a suicide bomber" who struck the airport. The Belgian federal prosecutor said it was "probably a suicide bomber" who struck the airport.
The attacks come four days after Salah Abdeslam, a key suspect in the Paris attacks, was captured in Brussels. Belgium has raised its terror threat to its highest level.
'Do all we can''Do all we can'
Prime Minister David Cameron chaired an emergency Cobra meeting to determine the UK's response to the explosions.
"These are appalling and savage terrorist attacks and I've just spoken to the prime minister of Belgium to give our sympathies and our condolences to the Belgian people," Mr Cameron said.
"They could just as well be attacks in Britain or in France or Germany, or elsewhere in Europe and we need to stand together against these appalling terrorists and make sure they can never win."
He said the UK faced a "very real terror threat", and the UK authorities were continuing to review information coming in - and would raise the terror threat level if there was information of a direct threat.
The UK terror threat level has been at "severe" since August 2014, meaning an attack is highly likely.
Heathrow and Gatwick airports have stepped up security, while flights between the UK and Brussels are disrupted.Heathrow and Gatwick airports have stepped up security, while flights between the UK and Brussels are disrupted.
Brussels Airport issued a statement confirming all flights were cancelled, with passengers advised to contact their airlines.Brussels Airport issued a statement confirming all flights were cancelled, with passengers advised to contact their airlines.
Mr Cameron tweeted: "I am shocked and concerned by the events in Brussels. We will do everything we can to help."
Brussels explosions 'leave 20 dead'
Brussels blasts - latest updates
In Pictures: Brussels blasts
The attacks come four days after Salah Abdeslam, a key suspect in the Paris attacks, was captured in Brussels.
Belgium has raised its terror threat to its highest level.
In the latest developments:In the latest developments:
The UK's most senior counter-terrorism officer, Mark Rowley, said the increased police presence was not in response to any specific information or intelligence.The UK's most senior counter-terrorism officer, Mark Rowley, said the increased police presence was not in response to any specific information or intelligence.
In London, he said the Met was putting more police on duty to carry out patrols at key locations.In London, he said the Met was putting more police on duty to carry out patrols at key locations.
"Our thoughts are with the people of Brussels following this morning's horrific attacks," he said."Our thoughts are with the people of Brussels following this morning's horrific attacks," he said.
Greater Manchester Police said it had also increased patrols - but not in response to any specific threat.
The UK terror threat level has stayed at "severe" since August 2014, meaning an attack is highly likely.