'Improvised explosive device' used in London train attack: British police

An explosion on a London Underground train that injured 18 people on Friday was caused by an "improvised explosive device".

In this image made from video, fire raises at a southwest London subway station in London Friday, Sept. 15, 2017. | AP

LONDON: An explosion on a London Underground train that injured 18 people on Friday was caused by an "improvised explosive device", police said.

"At 8:20 this morning at Parsons Green station there was an explosion on a Tube train. We now assess that this was a detonation of an improvised explosive device," police counter-terror chief Mark Rowley told reporters.

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