incident happened in the foyer area. the incident took place outside the venue in a public space, our thoughts and prayers go out to the victims. >> going to going out to a witness, someone who is there, a man called chris polley, he was on the scene, shot video what he saw. thankfully he and his friends escape the scene without being injured. here's part of what he shot. right there. we assume this is him on the line? what are we looking at? as a lobby? >> that's actually in the station. coming out of the arena just before trying to beat the rush to come out a few minutes early. coming just out of where the box office is in the arena and then go to the train station as we get to the top of this, heard the biggest explosion, and it was about 20 minutes from where we stood. everybody started panicking.