Hours after New York City was rocked by a blast that injured dozens, a Tumblr post emerged from a person claiming responsibilty for the attack.
The post, which disappeared not long after outlets like the New York Daily News began to report its existence, is being vetted by investigators.
The author of the post, which was titled "I am NY Bomber" claims he detonated the explosive as a "test" and is motivated by his anger over the mistreatment of sexual minorities in America.
“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," the post read.
The post continued:
"You probably have all seen the news by now, the explosives detonated in New York City, that was me. Those were just some tests, I know where I have made errors and I will not make the same mistake next time.
“It is 2016 and we are still being viewed as mentally ill, sinners, attention seekers, and just plain weirdos in general. I am not going to stand by while under classed and underprivileged people are oppressed. I am not going to stand by while there is inequality in my country such as the racism being seen in white police officers all over the country.
"I am not going to live in a country where it is OK to have a misogynist, xenophobic, racist Islamophobic, republican candidate running for President of The United States! That’s implying that republicans in general should even be taken seriously as they are all cisgendered privileged white people,” the post read, in part.
Authorities investigating the explosion, which appeared to come from a dumpster in the city's Chelsea neighborhood, injured some 29 people. None of the injuries appeared to be life threatening.
The device is believed to have been an improvised explosive device similar to the ones used at the Boston Marathon bombings.
A second such device was found as authorities investigated the first. It was safely removed by a bomb squad.
Mayor Bill de Blasio told reporters in the hours after the blast that there is “no evidence at this point of a terror connection to this incident."
"Though the injuries sustained are significant, at this point we can confirm that no one is likely to die," de Blasio said early Sunday.
The second device was reportedly removed by a robot and taken to the Bronx for detonation.
Donald Trump used the opportunity to continue to tout his intention to get "tough and smart and vigilant" as president.
"I must tell you that just before I got off the plane a bomb went off in New York and nobody knows what's going on," Trump said after landing in Colorado. "But boy we are living in a time -- we better get very tough, folks."
Hillary Clinton had a more measured response, the AP reports.
"About the bombings in New York and New Jersey and the attacks in Minnesota," she said, "we need to do everything we can to support our first responders — also to pray for the victims. We have to let this investigation unfold."