- There has been an explosion on a London Underground train on 15 September.
- Counter terrorism police say they are treating the explosion at Parsons Green station as a terrorist incident.
- Passengers described a "fireball" in the carriage which caused burns.
- Witnesses also described a "stampede" to escape which left people injured.
- Images from the scene show a Lidl bag with a burning white tub inside.
This concludes out live coverage of the Parsons Green attack.
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Chelsea football club, who are due to play at Arsenal at their home ground Stamford Bridge in west London on Sunday, have released this advice to all supporters travelling to the game.
The safety of all fans and visitors to Stamford Bridge is of paramount importance to the club. Following Friday morning's incident at Parsons Green, and in order to help us fully prepare for the game, the majority of the Stamford Bridge site will remain closed until Sunday morning. This includes Stadium Tours, the Museum, Megastore and the Chelsea Health Club & Spa, while the ticket office will be operating via telephone and online only.
During that time, entrance to the site will be via the Stamford Gate entrance only.
On Sunday, we urge supporters to arrive at least one hour before kick-off to allow for extra security measures. We also request that supporters do not bring bags as this will delay your entry to the stadium.
The club continues to monitor events and liaise with the police and relevant authorities on supporter safety. Any further updates will appear here and on the club's official Twitter account.
Please remain vigilant and if you see anything you are unhappy with, we encourage you to report it to a steward or any member of staff as quickly as possible.
Our safety procedures are in place for the benefit of all and we ask you to show patience and support.
A Downing Street spokesperson has confirmed that US president Donald Trump has spoken to Theresa May in the wake of the Parsons Green attack.
A PM spokesperson said: "President Trump called the Prime Minister earlier today to offer his condolences over this morning's cowardly attack in London.
"They also discussed North Korea's latest missile test, agreeing it was a reckless provocation and that China must now use all its leverage to bring pressure to bear on the North Korean regime to ensure they change course and end these illegal tests."
It is not clear if the pair spoke about Trumps "unhelpful" comments he made previously regarding what the police may or may not have known about the suspect.
To no real surprise, Transport for London (TfL) is advising passengers who normally take the District Line to seek alternative routes home as there is no service between Earls Court and Wimbledon for the rest of the evening.
The London Ambulance Service has given another update, increasing the number of patients they took to hospital to 19.
The total number of injured is now believed to be 23 after four others walked themselves to hospitals in the wake of the explosion.
We have video of PM Theresa May commenting on Donald Trump's "unhelpful" remarks from before claiming police knew who the terror suspect as before the attack.
Sky News are reporting that police have identified a potential suspect in the Parsons Green bombing after reviewing CCTV footage.
The police have evacuated the area surrounding Parsons Green tube station as part of the ongoing investigation into the terrorist incident.
The MET said in a statement:
The evacuation has been necessary whilst specialist officers secure the remnants of the improvised device and ensure it is stable.
A small number of residents will be affected by the evacuation, which encompasses an area approximately 50 metres in radius. Parsons Green tube remains closed and the public are advised to continue to avoid the area.
We are working hard with partners and the local community to minimise any disruption and would like to thank the public for their continued understanding and assistance at this time.
Prime Minister Theresa May has condemneded the "cowardly" Parsons Green terror incident, saying the explosive device used in the explosion "was intended to cause significant harm".
May also rebuked US President Donald Trump over his remarks on the the incident, saying that it is not "helpful for anybody to speculate on... an ongoing investigation".
Earlier today, Trump responded to the incident describing it as "another attack in London by a loser terrorist".
The leader was previously condemned for his remarks in the wake of London terror attacks in which he chose to personally attack Mayor Sadiq Khan.
Sign of goodwill in the wake of the terror attack as one local takeaway owner is offering free pizza to emergency workers at the scene.
Supermarket chain Lidl have said they are "shocked" at this morning's attack after pictures appear to show the homemade explosive device was carried in one of their plastic bags.
In a statement, they added: "We are shocked and concerned to have learned of an incident at Parsons Green this morning and our thoughts are with those affected.
"We will, of course, support the authorities should they need our assistance in their investigations. We are closely monitoring the situation as it develops over the course of the day."
Here is the Home Secretary Amber Rudd's response to this morning's attack.
Once more people going about their everyday lives have been targeted in a callous and indiscriminate way. My thoughts are with all those injured and affected.
The police and emergency services were quickly on the scene and I would like to pay tribute again to their professionalism and tireless commitment.
I am receiving regular updates on what is an ongoing and active investigation.
I would urge Londoners to remain alert and assist the police and emergency services as much as they can.
We now have a video of the statement Assistant Commissioner Mark Rowley gave to the press earlier:
Police have just issued another update, saying they are examining CCTV footage to help find the suspect and forensically examining the explosive device.
No arrests have been made so far.
The statement adds:
Detectives from the Counter Terrorism Command, part of the national counter-terrorism police network, are making fast-time inquiries to establish who was responsible and are working closely with the security services. So far there have been no arrests.
We believe the fire was caused by the detonation of an improvised device, which is being forensically examined.
Assistant Commissioner Mark Rowley, from the head of national counter-terrorism policing, said: "There are many urgent inquiries ongoing with hundreds of detectives involved, looking at CCTV, carrying out forensic work and speaking to witnesses.
"I am appealing for anyone who has information that would assist detectives to contact the hotline on 0800 789 321. I would also urge anyone with images or moving footage from the scene to upload them at www.ukpoliceimageappeal.co.uk
"Today and over the weekend the public can expect to see a heightened police presence, particularly in crowded places and at transport hubs.
"As always we urge the public to remain calm but alert; if they have any concerns, see or hear anything suspicious then please contact the police on the confidential hotline 0800 789 321. In an emergency always call 999."
The station remains cordoned off and people are being advised to avoid the area.
Our reporter Josh Robbins is down at Parsons green speaking to locals.
He has been informed that the nearby Lady Margaret School for girls sent a text all parents just after 9am to inform them "checking all registers" and that "no girls have been treated" as a result of the explosion.
Sam, a resident of the Dairy Close estate, which had to be evacuated following the explosion, said she does not know when she can return home.
She told IBTimes UK: "People knocked on the door and told us to get out. When we came out the police moved us here." She said the atmosphere was "more confused than anything else"
"I just want to go home and hope people are OK. The emergency services were amazing. The responded really quickly and really well."
Still no word from police regarding any potential suspects as to who left the explosive device on the tube.
Officers earlier dismissed reports that a "knifeman" was on the run following the explosion and have said they are not looking into any potential second device.
NHS England have said 22 people are being treated in hospital following this morning's explosion.
LAS previously said they had taken 18 people to hospitals across London with non-serious or life threatening injuries, but four more have now taken themselves to hospital.
Donald Trump has responded to the Parson Green incident, describing it as "another attack in London by a loser terrorist".
Trump was previously condemned for his previous remarks in the wake of London terror attacks in which he chose to personally attack Mayor Sadiq Khan.
The Mayor of London, Sadiq Khan, has told LBC that there is a manhunt underway following this morning's terrorist incident.
The police have appealed for images and videos of this morning's explosion. The investigation into the terrorist incident is ongoing.
Assistant commissioner Mark Rowley confirms in a statement that this morning's explosion was "a detonation of an improvised explosive device." The investigation is ongoing.
Home Secretary Amber Rudd says her thoughts are with the victims of the terrorist incident.
The National Counter Terrorism Security Office, which is investigating the incident, says it is aware "of a number of casualties". At least 18 people were taken to nearby hospitals following the explosion , but the London Ambulance Service said no-one is thought to be in a serious or life-threatening condition.
At least 18 people have been taken to hospitals in London following this morning's explosion, the London Ambulance Service said. No-one is thought to be in a serious or life-threatening condition.