In UK, a number of people have died and others have been injured following a reported explosion at Manchester Arena. British police said that witnesses reported hearing a huge bang following a pop concert by US singer Ariana Grande. They heard two loud bangs, reported to be near the ticket office of the arena. The cause of the reported explosion is unknown. <br/><br/>Manchester Victoria station, which is close to the concert venue, has been closed and all trains cancelled. Greater Manchester Police tweeted to urge people to stay away from the area. A number of eyewitnesses have described the confusion in the aftermath.'<br/>