Police said the 61-year-old male driver of the Audi car involved in the incident was assisting police with their enquiries.
The driver was one of the nine people injured in the incident.
More top news
Broadcaster PBS halted distribution of his nightly interview show and CBS News immediately suspended the 75-year-old.
Twenty years ago I reported from Mostar at the end of the Bosnian War. I returned to be reunited with some of the children I filmed then.
Around 60 firefighters tackled the blaze at the four-storey building in Daleham Gardens, Hampstead, that broke out early on Tuesday.