i didn't hear about anyone missing, but stephen lives alone, so it's no one related to him. that doesn't mean it's any less unsettling, however.
at this point, i don't think anyone know what started the fire-- i do know that stephen lived upstairs and the fire started in the downstairs portion of the house (it was a three or four family house). his neighbors (or someone) had to come in and get him out of his place, if they hadn't, he surely wouldn't be with us...