investigating in the mail room here at cnn what the white powder actually is. they're not clear as to whether it's just white powder or it might be a chemical substance. that's the part of the mystery. and then, of course, the concept of these coordinated devices showing up at different places is what has people really, really concerned here. we heard from the police commissioner, the fbi, the atf, the mayor, the governor and the deputy police commissioner john miller who was -- oh. hang on a second. the deputy commissioner who was talking about the fact that they still don't know exactly where these came from but it's early investigation. you can see some of the official police vehicles leaving now. we have got the mayor as i said here. the governor. the media is now been allowed to that point over there but this building is shut down. everybody is evacuated from it. the residents, the retailers and the investigation is still ongoing. as for cnn, stephanie, again, as you know, i worked in this building for seven years and cnn