LONDON, Sept 15 - London's transport authority said on Twitter that there was no service on part of a metro line in west London due to an incident. 'There is no service High Street Kensington - Edgware Road while the police respond to an incident,' according to a message posted on the official Twitter feed of London's District line. Earlier, a home-made bomb exploded on a packed rush-hour commuter train in London injuring 22 people on Friday, police said, in what was being treated as the fifth terrorism attack in Britain this year.
