As the search continues for the perpetrators of yesterday's attacks on London, police have put the death toll at 49, but expect it to rise.
It is understood that among the victims of the four attacks were nationals from China, Australia, Portugal, Poland and Sierra Leone.
Metropolitan Police Commissioner Ian Blair said that the death toll from the bomb blast on a London bus is 13, revising up a figure of two given yesterday.
The wreckage of the bus, with the roof torn off, is still on the street where it blew up. A large screen has been erected around the site.
Earlier, Mr Blair said there was great difficulty in determining a final death toll because of the damage at the blast scenes.
He added that there were 700 casualties, 350 people were taken to hospital, 22 are still in a critical condition and one person died in hospital.
Mr Blair said there was absolutely nothing to suggest that any of the attacks were carried out by a suicide bomber, although he added that nothing at this stage could be ruled out.
It has also been revealed that police have yet to reach one of the London underground train carriages where a bomb went off.
The Assistant Police Commissioner, Andy Hayman, said there were safety concerns in the tunnel.
Police suspect al-Qaeda
Police investigating the attacks say early indications suggest they were carried out by al-Qaeda.
However, they have dismissed reports that the bombings were the work of a terror cell based in the Midlands as 'pure speculation'.
Claim taken seriously
Britain's Home Secretary Charles Clarke has said a claim of responsibility for the bombings is being taken seriously.
The claim was made by a previously unknown group calling itself the Secret Organisation of al-Qaeda's Jihad in Europe on its website.
It posted a message saying the blasts were in retaliation for Britain's involvement in Iraq and Afghanistan.
In a television interview, Mr Clarke said the claim was serious, although alternative explanations have not been ruled out.
A huge police investigation got underway today to find those responsible for the bombings. Police investigators are still working at the scenes of the attacks.
Three explosions occurred on underground trains, the fourth on the double-decker bus. It was the worst terrorist attack in Britain since the Lockerbie explosions 17 years ago.
Muslim leaders in talks
Muslim leaders in London were holding talks with police today amid fears of reprisals against their community.
Most buses and a limited train service were operating in London this morning, but underground services remain curtailed. Transport for London has said many sections of the underground will not be fully restored for several weeks.
A large number of schools in London remained closed today.
Blair vows culprits will be caught
Yesterday, British Prime Minister Tony Blair pledged to bring those responsible to justice and said the way of life in Britain would not be affected.
While saying that the attacks appeared to have been carried out in the name of Islam, Mr Blair stressed that the vast majority of Muslims opposed terrorism.
The US Secretary of State, Condoleezza Rice, said those who carried out the attacks in London, and elsewhere, espoused an ideology of hatred.
She said there could be no peace deals with terrorists.
Fears that Denmark could be attacked
Denmark, one of the United States' staunchest allies in Iraq, is tightening security in the wake of the London blasts, amidst growing fears that it could be the next hit by a terrorist attack.
'It is now not a question of whether or not Denmark will be hit by a terrorist attack, but when it is going to happen,' Copenhagen University security expert Mikkel Vedby-Rasmussen said.
'I cannot look into a crystal ball and foretell the future of course but it seems unavoidable now and we must start preparing for the possibility,' he added.
NATO not asked for help
British authorities have not lodged a request for help from NATO after the attacks in London but the military alliance will be ready to aid if needed, Secretary General Jaap de Hoop Scheffer has said.
He said: 'The UK has not asked for invoking article five', referring to a clause in NATO's charter, which says that an attack on one member country is deemed an attack against all member countries.
He added: 'The UK has indicated that they can cope, but whenever the UK might ask for assistance, NATO will be ready to give it'.
Five minutes of silence in Spain
The government and several cities in Spain observed five minutes of silence in memory of the victims of the attacks on the London transport system, which recalled Spain's worst terrorist attack just over a year ago.
In a statement, the government said it wanted to demonstrate its solidarity with the victims and the British people and condemn yesterday's attacks.
The gesture, mirrored in several cities outside the capital Madrid, followed calls from the ruling Socialist Party and opposition conservative Popular Party.
The attacks on the London Underground and a bus bore similarities to the 10 blasts on four packed early morning commuter trains last year in Madrid, which killed 191 people and injured 1,900.
Both the Madrid and London attacks took place at rush hour, and the explosions took place almost simultaneously, indicating that they were carefully coordinated.
Security boosted in Thailand
Thai police have boosted security at subway stations, bus stops and shopping centres in the wake of the London bombings.
Thailand had already boosted security at 256 potential targets for attack around the country after militants staged coordinated bombings of an airport, a hotel and a store in the southern city of Hat Yai on 3 April.
National police chief General Kowit Wattana said: 'As of now we do not detect any terrorist movement in Thailand. We can control the situation in Thailand and we are closely coordinating our intelligence with information from other countries.'
- News At One: Martina Fitzgerald reports from London on fears within the tourism industry that visitors may now avoid the British capital
- News At One: Lord Timothy Garden, Professor at King's College London's Centre for Defence Studies, analyses what might emerge from the bombings investigation
- News At One: Sandra Hurley reports on a news conference this morning at which the head of the Metropolitan Police, Sir Ian Blair, underlined his force's determination to find the bombers
- News At One: Liza Pulman, freelance actress, tells of her terrifying experience in the underground as she filmed survivors making their escape with a camera phone
- Morning Ireland: Martina Fitzgerald discovers commuters are fairly defiant in London today
- Morning Ireland: Richard Whelan, author of 'Al-Qaedism - The Threat to Islam and the Threat to the World' and Bill Durodie of the Royal Military College of Science, debate the background to the attacks
- Morning Ireland: Willie O'Dea, Minister for Defence, talks about the Govt's emergency planning
- Morning Ireland: John O'Connor, former head of New Scotland Yard's Flying Squad, believes suicide bombers were involved in yesterday's bombings
- Morning Ireland: Evelyn McClafferty examines whether Dublin could cope with a similar attack
- Morning Ireland: Defence Analyst Tom Clonan argues there is a real threat of a similar attack in Ireland
- Morning Ireland: George Lee, Economics Editor, analyses the impact of the attacks on the G8 summit in Scotland
- Morning Ireland: Brian O'Connell, London Editor, reveals that the city's Muslim community fears a backlash
- Morning Ireland: Martina Fitzgerald speaks to people affected by yesterday's blasts in London city centre
- Nine News: Massive manhunt underway for London bombers
- Six One News: Bryan Dobson talks to Abdel Bari Atwan, Editor of the Al Quds newspaper, about the implications of yesterday's disaster
- Six One News: Will Goodbody reports on the role of the British intelligence services in the hunt for the perpetrators of yesterday's attacks
- Six One News: Bethan Kilfoil talks to some people who visited the British Embassy in Dublin to offer their condolences
- Six One News: Brian O'Connell has more detail on the investigation
- Six One News: Jonathan Clynch reports on the reaction from religious leaders and Queen Elizabeth to the bombings
- Six One News: Brian O'Connell, London Editor, reports on the latest on the recovery operation and police investigation
- Six One News: Charlie Bird, Chief News Correspondent, reports from London on the aftermath of yesterday's quadruple bomb attack
- One News: David Murphy, Business Correspondent, reports that financial markets are returning to normal after yesterday's attacks
- One News: David Davin-Power reports that Taoiseach Bertie Ahern has said Gardaí are closely watching a number of individuals suspected of being al-Qaeda sympathisers
- One News: Robert Shortt, Washington Correspondent, reports that the terror alert has been raised to code orange in the US
- One News: Brian O'Connell, London Editor, details the latest information about the scale of the devastation caused yesterday
- One News: Anne-Marie Green reports that Prince Charles and the Duchess of Cornwall visited hospitals and spoke to some of those injured
- One News: Charlie Bird, Chief News Correspondent, speaks to Londoners on the streets of their capital a day after the terror attacks
- News Special 2: John Finnerty presents a round-up of the latest developments
