that's fall undown to the upper circle, the dress circle, and consequently we have a large number of casualty, many of whom are walking wounded, and are currently being treated. what are you see there, nic? what's the latest? >> reporter: wolf, let me try to get you the latest details. i'm talking with nick harding, the press officer for the london fire service here. you're on the scene here, mr. harding, what can you tell you what happened here tonight? >> good evening, nick. what appears to have happened tonight is an area of ornate plaster ceiling has collapsed. it's landed on the balconies down there onto the main floor itself. it was a chaotic scene in there. >> we had about 50 firefighters on the scene, fire engines, and a number of specialist understand, so now the understand are making sure that the building is safe before we hand it back to the occupiers. >> what is the situation? are they safe now? >> i can confirm that everybody is out of the building, a number of people are being treated and triaged, and they'll have to give more details about themselves in due course. >>