Brussels enters third day of lockdown on highest level of alert
Jets from a French aircraft carrier in the eastern Mediterranean have begun missions against Islamic State
Belgian police arrest 21 people in raids after Paris attacks
Suspected Paris gunman Salah Abdeslam still at large
UK Prime Minister David Cameron visits Bataclan concert hall with President Hollande
All times GMT
Newspaper gives information for residents
While schools and underground transport are closed in Brussels, buses are running and some shops and hospital clinics remain open.
Brussels newspaper La Dernière Heure (DH) has a page on its website, external (in French) with information about what is open in the city.
DH is also reporting that there have been more traffic jams than normal, external as passengers avoid public transport.
Image source, AFPThe manhunt for suspected Paris gunman Salah Abdeslam continues. Reports have emerged that he may have fled Brussels in a BMW, travelling in the direction of Germany.
On its front page, German tabloid newspaper Bild wonders if he has managed to reach the country, BBC Monitoring reports.
Under the headline "Belgian elite units chasing Paris attacker", the paper asks "Has Terrorist Abdeslam fled to Germany?".
Image source, BildBrussels resident Nadine Rosa-Rossa speaks to BBC Newsday
School teacher Nadine Rosa-Rossa says the atmosphere in Brussels is "like we are in a war".
"I know little kids who are very anxious. And what do we tell to the children?"
She said she wanted the Belgian government to give the people of Belgium a different message - "that we are together".
"Now it is only a message of fear. And fear is bad for everything".
Listen to the interview here
Image source, AFPA Belgian policeman and a soldier stand guard outside the central station in Brussels
BBC producer tweets
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Brussels is in its third day of lockdown, with schools and underground transport shut.
Commuters have been reporting empty streets, with some describing an uneasy feeling in the city.
Twitter users also shared images of some of the city's best-known landmarks, unusually quiet for a Monday morning.
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Speaking at the Elysee Palace, the French president said France and the UK had agreed to "increase the sharing of information" but called for greater EU-wide efforts to boost intelligence networks.
"We have to make sure people coming into our country are not accomplices of terrorists," he said.
On Friday, EU interior ministers met to discuss tightening the external borders of the passport-free Schengen area in response to the Paris attacks.
President Hollande said France would intensify strikes to cause the "most damage possible" to IS. "Our aircraft arriving in the region is mandated to launch strong strikes against IS," he said.
The president confirmed that the French aircraft carrier, Charles de Gaulle, would join the military action.
He added that France would continue to try to find a political solution in Syria - but that Syrian President Bashar al-Assad could play no part in the country's future.
Image source, APThe UK prime minister said Britain stood beside France in its efforts to tackle the so-called Islamic State group.
"It is clear that we are coming together to tackle this brutal organisation," he said at the Elysee Palace.
"Nous sommes solidaires avec vous" he added in French [We are united with you].
UK Prime Minister David Cameron said the UK would "do all in our power to help our friend and ally France". He said the two countries "face a shared threat".He said Britain and France needed to do more to combat terrorism by stepping up efforts to share information and tackling the problem of returning foreign fighters.
Image source, APMr Cameron said he firmly supported the military action President Hollande had taken against IS in Syria, adding that he was convinced that Britain should follow suit.
He said he would be setting out proposals in parliament for more action this week.
Speaking at a news conference, President Hollande said the objective of his meeting with UK PM David Cameron was "to reinforce the system of intelligence to combat terrorism" and "to have a clear vision of what we have to do to defeat Isis [IS]".
The authorities in Brussels asked the public to not report police movements during Sunday's anti-terror operation on social media.
On Twitter, the hashtag #BrusselsLockdown had been the term of choice for people discussing the raids.
But on Sunday night, the term was overtaken by Twitter users posting pictures and videos of cats, to make sure that any leaking of operational details were drowned out.
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Belgian Interior Minister Jan Jambon has told Belgian TV, external that it is too early to say whether the threat in Brussels is lower following Sunday's operations.“The operation isn’t yet over. So it’ll carry on in the hours and days ahead,” he said.
Mr Jambon said the situation was "very delicate" and that "every detail could go in a hundred different ways”.
Image source, APThe BBC's Europe editor tweets
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David Cameron has arrived in Paris to hold talks with French President Francois Hollande on co-operation in the fight against so-called Islamic State.
BBC correspondent Kevin Connolly said that alongside the expected comparing of notes on security co-operation and intelligence sharing between Britain and France, the meeting will raise the question of the scope of British air operations against IS targets in the Middle East.
Read more here
Image source, GettyPrime Minister David Cameron tweets
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Welcome to our live coverage of events following last Friday's attacks in Paris that left 130 people dead.
Here are the latest developments: