Emergency crews are on the scene of a possible building explosion in the Chelsea neighborhood of Manhattan which was reported shortly before 9 p.m. Saturday.

There are no reports of fatalities, although a few outlets are reporting more than 20 hurt in the blast, most with minor injuries.

Though there’s chatter of an IED exploding in a trash bin, nothing has been confirmed by officials at this hour.

The mayor is on his way to the scene, but in the meantime, New Yorkers continue to be New Yorkers.

CNN is reporting that a gas explosion has been ruled out.

And Mayor de Blasio has arrived for a briefing from the police.

President Obama had been at a Congressional Black Caucus awards dinner with Hillary Clinton at the time of the blast.

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Update:

Mayor de Blasio said at a press conference around 11:20 p.m. that all signs pointed to an intentional attack.

Police are actively investigating a possible secondary device four blocks away.

Police have said all they’re going to say for now, but sources are saying there is a second device, which is believed to be a pressure cooker, reminiscent of the Boston Marathon bombing.

Twitchy will continue to update this post as details become available.