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
Thank you for following today's live coverage of the investigation into the 13 November Paris attacks and the continuing terror alert in Belgium. We will resume our live coverage early on Tuesday morning UK time. In the meantime you can follow all the developments on our homepage.
The BBC's World Have Your Say programme has been speaking to Brussels residents to get their views on the shutdown. Stephane, a cafe-owner in central Brussels, said it had become "a ghost city".
"It's an overreaction, it only creates mass hysteria," he said. See more here.
"A belt that may resemble an explosive belt" has been found in the southern Paris suburb of Montrouge, AFP news agency is reporting.
A police source told the agency that the object was found in a dustbin. A source close to the inquiry said telephone data placed Salah Abdeslam, a key suspect in the attacks who is still on the run, in the Montrouge area on the night of the attacks.
Many countries have had a more visible security presence after the Paris attacks. Here an Italian soldier patrols in Rome's Termini train station.
Image source, ReutersAlthough many visitors are steering clear of Brussels, one old-timer in the city told the BBC's Gavin Lee she was undeterred by the lockdown:
Quote MessageOne cafe has opened, one where it's usually hard to get a seat. Today there is one customer, a lady eating a late breakfast. Sylvia is 75, and has been here every day for twenty years. “I am not afraid. We have a lot of security measures, I don’t think the terrorists will attack now, and I’ll be here tomorrow. It’s my way of showing resistance."
AP has more on the explosive belt reportedly found in the Paris suburb of Montrouge.
It quotes a police official as saying it was found by a street cleaner on Monday in a pile of rubble.
Police are currently analysing the belt to see if it may have been used in the 13 November attacks that killed 130 people, the official said.
The AP agency quote French police as saying that an explosive belt without a detonator has been found in the southern Parisian suburb of Montrouge.
Quote MessageThe Belgian government and the Belgian people are facing a very difficult situation and I want to thank the people for their understanding - I also want to thank our security services, they are working very hard.
Charles Michel, Belgian Prime Minister
Mr Michel says the Brussels metro system will also re-open "gradually" from Wednesday.
Quote MessageWe have today decided to maintain the alert level at the maximum level of 4, the situation is the same with a serious and imminent threat for Brussels. The rest of the country remains at level 3.
Charles Michel, Belgian Prime Minister
Belgian Prime Minister Charles Michel announces at a press conference that the capital Brussels will remain at the highest alert level until next Monday.
Schools will re-open from this Wednesday, he said.
The BBC's Gavin Lee has been speaking to the few people out and about in Brussels.
Quote MessageToday I walked through the Royal Gallery of St Hubert. I counted on one hand the number of shoppers. This place is an essential tourist stop, with Belgian’s finest chocolates on display. Only one has opened, with armed soldiers outside, and it has barely any customers. Two Danish tourists select some macaroons, looking over their shoulders as I enter. "We were told by the hotel manager not to come here, but we thought we’d take a chance. Buy presents for the family and leave quickly." Eva, behind the counter, says her boss told her she could have the day off if she was afraid. She says: "I feel I'd be letting myself down if I didn’t come in, even if no-one comes in to be served."
Gavin Lee, BBC News
Image source, ReutersThe Belgian prosecutor says one of suspects detained in a counter-terror operation has been charged with involvement in the Paris attacks.
Fifteen of the 16 people who were detained in operations on Sunday night have since been released, the prosecutor's office said.
Belgian officials are expected to announce shortly whether they will maintain the current high alert in Brussels for another day.
At least one local official - the mayor of Vilvoorde, a municipality bordering Brussels - has said schools in his district will remain closed tomorrow, regardless of what Brussels authorities decide.
BBC Monitoring
Media in Belgium's neighbouring countries have been pondering the repercussions of the alert in Brussels.
Belgian newspaper La Libre says Brussels now "lives in fear" as "a target". It asks if this is the aim of the terrorists: "Has 'the work been done' as we feared, restricting our movements, taking away our leisure, and imposing a kind of curfew?"
Dutch newspaper NRC highlights tough criticism of Belgium's failure to "clamp down" on violent Islamism.
German conservative paper Die Welt says that "fear of terror will be the city's constant companion in the coming days", adding: "There is little evidence that the major night-time police deployment will restore the confidence of the people of Brussels that they are safe once again."
French left-leaning L'Humanite fears that rising security or counter-terrorism measures might lead to increased violence from both sides of the political spectrum.
BBC Monitoring has produced a more detailed roundup of the press reaction.
Image source, BBC Monitoring
Image source, BBC MonitoringA selection of images from the third day of the lockdown in Brussels, where soldiers accompanied police on streets lacking their characteristic bustle.
Image source, AP
Image source, EPA
Image source, AFPBelgian daily Le Soir has been analysing, external the impact of the Brussels lockdown.
"The lockdown paralyses Brussels and gradually the whole country in a climate of anxiety," it says. "The 'lockdown' of a city for a long period as a precaution against a terrorist threat is unprecedented, not only in Belgium."
The paper also accuses the authorities of creating "horrible confusion" by way of contradictory statements on the situation.
Mourners gather to bury two victims of the Paris attacks, Anna and Marion Petard-Lieffrig, outside the Saint Louis Cathedral in Blois, central France, on Monday.Anna, 26, and her sister Marion, 30, were killed in the Le Petit Cambodge restaurant, the AFP news agency reported.
Image source, Getty Images
Image source, Getty ImagesFrench President Hollande is meeting four world leaders in as many days, to discuss topics ranging from the Syrian conflict to intelligence-sharing between European countries.
This morning he met with UK Prime Minister David Cameron to discuss co-operation in the fight against the so-called Islamic State. He next flies to Washington to see US President Barack Obama, before returning to Paris for a meeting with German Chancellor Angela Merkel on Wednesday.
And on Thursday, he is off to Moscow for talks with Russian President Vladimir Putin.
Read Lucy Williamson's full report on French diplomacy following the Paris attacks.
Image source, APMr Hollande and Mr Cameron visit the Bataclan concert theater on Monday morning