1 / 32

Homemade bomb explodes on packed London subway

Police officers on the scene during a search on an address in Stanwell on Sept. 17, 2017 in London, England. A second man has today been arrested in connection with the Parsons Green attack which left 30 injured. (Photo: Jack Taylor/Getty Images)

Homemade bomb explodes on packed London subway

British police arrested a second man over the bombing of a London commuter train on Friday that injured 30 people and the security services lowered the threat level for an attack from its highest setting.

The 21-year-old man was detained under Britain’s terrorism laws in the west London suburb of Hounslow just before midnight on Saturday, London police said in a statement.

Police earlier arrested an 18-year-old man in the departure lounge of Dover port in what they called a “significant” step and then raided a property in Sunbury-on-Thames, a town near London and about four miles (six km) from Hounslow.

The home-made bomb shot flames through a packed carriage at west London’s Parsons Green Tube station during the Friday morning rush hour but apparently failed to detonate fully.

Islamic State claimed responsibility, as it has for other attacks in Britain this year, including two in London and one at a concert by American singer Ariana Grande in Manchester in May. (Reuters)

See more news-related photo galleries and follow us on Yahoo News Photo Twitter and Tumblr.

By using Yahoo you agree that Yahoo and partners may use Cookies for personalisation and other purposes