British police “chasing down suspects” after train bombing

British police are chasing down the people they suspect of being behind a bomb which injured 29 people on a packed commuter train in west London on Friday, the country’s most senior counter-terrorism officer said.

Mark Rowley said officers were sifting through surveillance footage and examining the remains of the device.

“This is a very complex investigation which is continuing at speed,” he told reporters. “We are chasing down suspects.”