http://www.bbc.com/news/uk-england-manchester-40007886
Police are responding to a "serious incident" in Manchester amid reports of
an "explosion" following a pop concert.
Witnesses reported hearing a "huge bang" following an Ariana Grande gig at
Manchester Arena.
Network Rail said train lines out of Manchester Victoria station, which is
close to the concert venue, were blocked.
Greater Manchester Police tweeted to urge people to stay away from the area.