Police nab second suspect over London bombing

A second man has been arrested over Friday’s bomb attack on a London underground train. Police detained him in west London, and also raided a house about four miles away.

SUNBURY-ON-THAMES / DOVER / LONDON, ENGLAND, UNITED KINGDOM / INTERNET (REUTERS / BBC / UK POOL / SITE INTELLIGENCE GROUP) – Police have arrested a second man over Friday’s (September 15) bombing attack on a London train.

Detaining a 21-year-old under Britain’s Terrorism Act in the west London suburb of Hounslow just before midnight Saturday (September 16).

They also raided a house in the town of Sunbury, about four miles away.

The home-made bomb shot flames through a train carriage packed with morning commuters at Parsons Green tube station, also in the west of the capital.

It injured 30 people, but the device failed to fully detonate.

Earlier on Saturday, police arrested an 18 year-old man in Dover’s port area, where passenger ferries set sail for France.

Islamic State claimed responsibility for the tube bomb, as it has for two other attacks in London this year and one at a concert in Manchester by U.S. singer Ariana Grande.

But intelligence officials say there is scant evidence so far of the group’s involvement.

Images from the scene show a plastic bucket in flames with wires sticking out of it.

After Friday’s bombing, Britain raised its threat-level to “critical”, meaning another attack may be imminent.

British troops taking over guard duties ati strategic sites to free up hundreds of police officers for the manhunt.

They’re scouring through surveillance footage, examining the device and speaking to witnesses as they try to establish whether or not the bomber worked alone.