New York Mayor Bill de Blasio tweeted after his news conference:
Once again, we have been shown what our first responders are capable of under extraordinarily difficult circumstances. #eastharlemexplosion
More top news
Ofcom has been asked by cable giant Virgin Media to open a formal investigation into the way the Premier League sells its TV rights
The whole tooth: Five fascinating dental facts
Newcastle boss Alan Pardew's job is under no immediate threat despite a winless start to the Premier League season.