Following the explosion in the Chelsea neighborhood of Manhattan which left 29 injured, a 911 caller called to say there would be more bomb explosions to come.
Investigators believe the blast was the result of a homemade, pressure-cooker bomb similar to an unexploded device found later on 27th Street, sources said.
In another new wrinkle, a handwritten letter, a portion of which is in Arabic, was found inside a plastic bag that held the second device, sources said.
Police interviewed witnesses near the Chelsea explosion who say they saw an “Arab-looking man” carrying a suitcase who appeared to be out-of-place.
Investigators have obtained surveillance video of a person placing the unexploded device, sources said.
According to reports, the bombs that exploded in New Jersey and New York Saturday are linked to the same person.
Meanwhile, sources said investigators were “vetting” an online Tumblr page on which someone claiming to be “the NY Bomber” took responsibility for the blast and said the motive was a response to anti-gay “violence and oppression.”
“I did it because I cannot stand society. I cannot live in a world where homosexuals like myself as well as the rest of the LGBTQ+ community are looked down upon by society,” one post says.
The Tumblr page was taken down early Sunday afternoon.