UPDATE: Two Killed in East Side Crash
So far, this appears not to have been part of any terrorist plot. The scene at 524 East 72nd Street sounds harrowing, though, with three condos said to be fully engulfed in flames.
(Reuters photo, via signsonsandiego)
We'll post more information and pictures as we get them. For now, here's an earlier take from AP:
"There's huge pieces of debris falling," said one witness who refused to give her full name. "There's so much falling now, I've got to get away."