Amber Rudd to chair Cobra meetingpublished at 11:58 British Summer Time 16 September 2017Breaking
Home Secretary Amber Rudd will chair a meeting of the government's Cobra emergency committee at 13:00 BST.
Summary
Second man arrested in connection with Parsons Green attack
The 21-year-old was detained in Hounslow, west London on Saturday night
On Saturday morning, Kent Police arrested an 18-year-old man in Dover
UK terror threat level reduced from 'critical' to 'severe'
Police 'keeping an open mind' on number of suspects involved
Of the 30 people injured, one is still being treated in hospital
Amber Rudd to chair Cobra meetingpublished at 11:58 British Summer Time 16 September 2017
Police trawl CCTV footagepublished at 11:48 British Summer Time 16 September 2017
Image source, Getty ImagesInvestigators have CCTV footage of a person suspected of planting the Parsons Green bomb BBC Home Affairs Correspondent Danny Shaw says.
British Transport Police officers are helping to trawl through the images, Assistant Chief Constable Robin Smith says:
Quote MessageBritish Transport Police obviously has a great deal of specialism and expertise in looking at how people move around the stations, how people exit and leave the stations and of course we have got a wide network of CCTV cameras."
NHS issues trauma advicepublished at 11:41 British Summer Time 16 September 2017
Image source, NHSNHS England is offering advice on how to cope with reactions in the wake of traumatic incidents.
More details can be found here, external. Or you can go to the NHS Choices website at www.NHS.uk
How terror threat levels workpublished at 11:41 British Summer Time 16 September 2017
Reality CheckThe UK terror threat level has been raised to its highest level of "critical" after the Parsons Green Tube bombing - meaning an attack may be imminent.
The international terror threat scale was first made public in the UK in August 2006, just over a year after the London Tube and bus bombings that killed 52 people.
There are five ratings at which the threat level can stand.
Extra police officers on dutypublished at 11:29 British Summer Time 16 September 2017
Extra police officers are on duty on Saturday after the bombing, including from the British Transport Police.
And the police have asked asked the Prime Minister Theresa May for authorisation to enact part of the first phase of Operation Temperer - which provides military support to police force operations.
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End of twitter post'Terrorist analysts' set security levelpublished at 11:28 British Summer Time 16 September 2017
Today Programme
BBC Radio 4
Image source, Getty ImagesThe national terror alert level was raised to critical later on Friday evening, hours after Friday morning's bombing.
Asked why it took hours to increase the level, Security Minister Ben Wallace tells the BBC's Today programme:
Quote MessageThe threat level in this country is set independently of politicians by the Joint Terrorist Analysis Centre.
Quote MessageThey look at a range of things. They look at the intelligence at their fingertips. They look at changes in people we are currently watching - and see if they are inspired by an attack to maybe copy things - and they look at the pace of the investigation.
Quote MessageIf they feel as a result of all those factors that an attack is likely to become imminent then that's why they raise it to critical as they then did later in the day."
Police cuts hamper fight against terroristspublished at 11:27 British Summer Time 16 September 2017
BBC Radio 5 live
Image source, Getty ImagesFormer chairman of the intelligence and security committee and Tory MP Dominic Grieve said he “accepted the argument” that cuts to the police have led to less community officers “picking up tips”.
He told Radio 5 Live that the government should “listen carefully” to critics of the cuts, as “anything which can increase our resilience against terrorism needs to be considered”.
However, he warned against “jumping to conclusions” that more police on the beat would have stopped such attacks from happening.
Analysis: A 'critical' changepublished at 11:27 British Summer Time 16 September 2017
Frank Gardner
BBC Security Correspondent
Image source, Getty ImagesThis is the fourth time the UK national terror threat level has been raised to 'critical' since the system was made public in 2006.
The last time was in May this year, following the Manchester Arena bombing, when it was wrongly thought that the bomb-maker was still at large and could strike again.
In the case of Parsons Green it is perhaps surprising that it took the government so long - more than 12 hours - to raise the threat level to critical, under advice from the Joint Terrorism Analysis Centre, when it was obvious the perpetrator had neither died nor been caught.
Each time the level has gone to critical, it has only stayed at this highest level of alertness for three to four days - this is partly as it involves an unsustainably high tempo for the police, intelligence and security services.
Travellers return to Parsons Green stationpublished at 11:20 British Summer Time 16 September 2017
Image source, PAImage caption, Commuters returned to the re-opened Parsons Green station on Saturday
Parsons Green Undergroup station re-opened on Saturday morning following the bomb on a District Line Tube on Friday which police now say has injured 30 people.
Police find CCTV footage of bombing suspectpublished at 11:12 British Summer Time 16 September 2017
Our Home Affairs Correspondent Danny Shaw writes:
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End of twitter postPolice speak to '45 witnesses' so farpublished at 11:11 British Summer Time 16 September 2017
Detectives have so far spoken to 45 witnesses to the attack, according Deputy Assistant Commissioner Basu.
He says that police are continuing to receive information from the public - particularly to the confidential anti-terrorist hotline.
Quote MessageThe public has sent 77 images and videos to investigators via the UK Police Image Appeal website."
Anyone with footage or images from the incident is urged to upload them at www.ukpoliceimageappeal.co.uk, he added.
Arrest made in port area of Doverpublished at 11:08 British Summer Time 16 September 2017
The police have given more details about the arrest.
They say an 18-year-old man was held by Kent Police in the port area of Dover on Saturday morning.
He remains in custody at a local police station and will be transferred to a south London police station 'in due course'.
Injured people now put at 30published at 11:07 British Summer Time 16 September 2017
The Met Police's Neil Basu says a total of 30 people have been injured following the rush hour attack.
Threat level remains at 'critical'published at 11:06 British Summer Time 16 September 2017
Metropolitan Police deputy assistant commissioner Neil Basu says:
Quote MessageWe have made a significant arrest in our investigation this morning. Although we are pleased with the progress made, this investigation continues and the threat level remains at critical.
Quote MessageThis arrest will lead to more activity from our officers. For strong investigative reasons we will not give any more details on the man we arrested at this stage.”
Arrest is 'significant', say policepublished at 11:05 British Summer Time 16 September 2017
Police say the arrest is "significant" and that they are making good progress in the investigation into Friday morning's bombing.
Police arrest man in connection with bombingpublished at 11:02 British Summer Time 16 September 2017
BreakingPolice arrest an 18-year-old man in the Dover area in connection with Friday's Parsons Green Tube train bombing.