It looks like some whack job set off a bomb in Manhattan. Thankfully, there are no fatalities:

A powerful explosion caused by what the authorities believe was a homemade bomb injured at least 29 people on a crowded sidewalk in the bustling Chelsea neighborhood of Manhattan on Saturday night.

A few hours later, the authorities found and removed what they described as a second explosive device four blocks away, raising the possibility that two bombs had been planted in the heart of the city.

Mayor Bill de Blasio called the explosion — which occurred about 8:30 p.m. on West 23rd Street — “an intentional act” but initially said there was no connection to terrorism and no immediate claim of responsibility.

Police officers swarmed Chelsea’s streets after the blast, which reverberated across a city scarred by terrorism and vigilant about threats, just days after the 15th anniversary of the Sept. 11 attacks.

“Whatever the cause,” Mr. de Blasio said, “New Yorkers will not be intimidated.”

As the authorities sought to identify what had caused the explosion, they described the second device as a pressure cooker resembling the one used in the deadly Boston Marathon bombings in 2013, according to a police official, who spoke on the condition of anonymity to discuss a continuing investigation.

No word on who yet, but seeing as authorities have not yet tried to finger ISIS or al Qaeda, which makes me wonder if this might have been a Timothy McVeigh type, rather than Islamist terrorism.