After the explosion in a packed Tube train in London, the police have launched a massive manhunt for the suspects. The attack was claimed by Islamic State terror group.
Metropolitan Police Assistant Commissioner Mark Rowley said police were “chasing down suspects” and hundreds of officers were trawling through CCTV.
He said support from the military would free up about 1,000 extra armed police officers, largely from the Civil Nuclear Constabulary and Ministry of Defence police.
Detectives used CCTV images from the station and train to single out the suspect believed to have planted the homemade device, but were still working to identify the bomber.
Earlier on Friday, an explosion on a London Metro train at Parsons Green underground station injured several people.
The incident occurred during rush hour on a District Line Tube train as it pulled into Parsons Green station.
Scotland Yard’s counter-terrorism squad, SO15, arrived at the scene at Parsons Green Tube station and took the lead in the investigation from the British Transport Police.
UK police said London's Parsons Green tube explosion is being treated as terrorism.
“Deputy Assistant Commissioner Neil Basu, the senior national coordinator for counter-terrorism policing, had declared it a terrorist incident,” the Metropolitan Police said in a statement.