Major Incidents | Slideshow

London Subway Bombing

01 / 16

Britain Subway Incident

In this image made from video, fire raises at a southwest London subway station in London Friday, Sept. 15, 2017. London's Metropolitan Police and ambulance services are confirming they are at the scene of "an incident" at the Parsons Green subway station in the southwest of the capital. The underground operator said services have been cut along the line. (@RRIGS via AP)

02 / 16

Britain Subway Incident

An injured woman is assisted by a police officer close to Parsons Green station in west London after an explosion on a packed London Underground train, Friday, Sept. 15, 2017. London's Metropolitan Police says a fire on the London subway has been declared a "terrorist incident." (Stefan Rousseau/PA via AP)

03 / 16

Britain Subway Incident

An armed police officer stands nearby after an incident on a tube train at Parsons Green subway station in London, Friday, Sept. 15, 2017. A reported explosion at the train station sent commuters stampeding in panic, injuring several people on Friday at the height of London's morning rush hour, and police said they were investigating it as a terrorist attack. (AP Photo/Frank Augstein)

04 / 16

Britain Subway Incident

Metropolitan Police Assistant Commissioner Mark Rowley speaks to the media outside New Scotland Yard, giving a statement about the investigation following a terrorist attack at Parsons Green subway station in London, Friday, Sept. 15, 2017. A bucket wrapped in an insulated bag caught fire on a packed London subway train early Friday, sending commuters stampeding in panic at the height of the morning rush hour. (Victoria Jones/PA via AP)

05 / 16

Britain Subway Incident

A police forensic officer stands beside the train where an incident happened, that police say they are investigating as a terrorist attack, at Parsons Green subway station in London, Friday, Sept. 15, 2017. A bucket wrapped in an insulated bag caught fire on a packed London subway train Friday, sending commuters stampeding in panic at the height of the morning rush hour. (AP Photo/Frank Augstein)

06 / 16

Britain Subway Incident

Fire Brigade officers walk within a cordon near where an incident happened, that police say they are investigating as a terrorist attack, at Parsons Green subway station in London, Friday, Sept. 15, 2017. A bucket wrapped in an insulated bag caught fire on a packed London subway train Friday, sending commuters stampeding in panic at the height of the morning rush hour. (AP Photo/Kirsty Wigglesworth)

07 / 16

Britain Subway Incident

Police officers walk with a dog within a cordon near where an incident happened, that police say they are investigating as a terrorist attack, at Parsons Green subway station in London, Friday, Sept. 15, 2017. A bucket wrapped in an insulated bag caught fire on a packed London subway train Friday, sending commuters stampeding in panic at the height of the morning rush hour. (AP Photo/Kirsty Wigglesworth)

08 / 16

Britain Subway Incident

Police officers walk with a dog within a cordon near where an incident happened, that police say they are investigating as a terrorist attack, at Parsons Green subway station in London, Friday, Sept. 15, 2017. A bucket wrapped in an insulated bag caught fire on a packed London subway train Friday, sending commuters stampeding in panic at the height of the morning rush hour. (AP Photo/Kirsty Wigglesworth)

09 / 16

Britain Subway Incident

Police forensic officers walk within a cordon near where an incident happened, that police say they are investigating as a terrorist attack, at Parsons Green subway station in London, Friday, Sept. 15, 2017. A bucket wrapped in an insulated bag caught fire on a packed London subway train Friday, sending commuters stampeding in panic at the height of the morning rush hour. (AP Photo/Kirsty Wigglesworth)

10 / 16

Britain Subway Incident

Police forensic officers walk within a cordon near where an incident happened, that police say they are investigating as a terrorist attack, at Parsons Green subway station in London, Friday, Sept. 15, 2017. A bucket wrapped in an insulated bag caught fire on a packed London subway train Friday, sending commuters stampeding in panic at the height of the morning rush hour. (AP Photo/Kirsty Wigglesworth)

11 / 16

Britain Subway Incident

Police forensic officers walk within a cordon near where an incident happened, that police say they are investigating as a terrorist attack, at Parsons Green subway station in London, Friday, Sept. 15, 2017. A bucket wrapped in an insulated bag caught fire on a packed London subway train Friday, sending commuters stampeding in panic at the height of the morning rush hour. (AP Photo/Kirsty Wigglesworth)

12 / 16

Britain Subway Incident

Fire brigade officers walk within a cordon near where an incident happened, that police say they are investigating as a terrorist attack, at Parsons Green subway station in London, Friday, Sept. 15, 2017. A bucket wrapped in an insulated bag caught fire on a packed London subway train Friday, sending commuters stampeding in panic at the height of the morning rush hour. (AP Photo/Kirsty Wigglesworth)

13 / 16

Britain Subway Incident

Fire brigade officers walk within a cordon near where an incident happened, that police say they are investigating as a terrorist attack, at Parsons Green subway station in London, Friday, Sept. 15, 2017. A bucket wrapped in an insulated bag caught fire on a packed London subway train Friday, sending commuters stampeding in panic at the height of the morning rush hour. (AP Photo/Kirsty Wigglesworth)

14 / 16

Britain Subway Incident

Fire brigade officers walk within a cordon near where an incident happened, that police say they are investigating as a terrorist attack, at Parsons Green subway station in London, Friday, Sept. 15, 2017. A bucket wrapped in an insulated bag caught fire on a packed London subway train Friday, sending commuters stampeding in panic at the height of the morning rush hour. (AP Photo/Kirsty Wigglesworth)

15 / 16

Britain Subway Incident

Police and community support officers gather round a police vehicle near where an incident happened that police say they are investigating as a terrorist attack at Parsons Green subway station in London, Friday, Sept. 15, 2017. A bucket wrapped in an insulated bag caught fire on a packed London subway train Friday, sending commuters stampeding in panic at the height of the morning rush hour. (AP Photo/Kirsty Wigglesworth)

16 / 16

Britain Subway Incident

Britain Subway Incident