A Tumblr user announced in a post that he was the Chelsea bomber and acted in response to “LGBTQ+ oppression,” promising that more bombs would follow.

chelsea bomber
Tumblr User Says He’s Chelsea Bomber, Upset with Anti-LGBTQ Discrimination, Trump [Photo Credit: Tumblr]
The individual wrote in a post entitled Taking a human life, “I don’t know exactly how I feel about taking human lives.” “However, what I do know is that if I don’t do what needs to be done nobody will pay attention.”

The poster, who wrote that he is a gay, railed against Republican presidential nominee Donald Trump. “I am not going to live in a country where it is OK to have a misogynist, xenophobic, racist Islamophobic, republican candidate running for the President of the United States!”

The writer also said that they would “not stand by while under classed and underprivileged people are oppressed.” The individual also decried racism by white police officers all over the country.

The Tumblr account has since been taken down.

Authorities are reportedly investigating whether the Chelsea bomber’s manifesto on Tumblr is authentic. The New York Post reports investigators are looking into a 911 call received shortly after the explosion.

The unidentified male caller reportedly said, “I’m looking at the explosion down the block. There will be more.”

UPDATE: The Associated Press reports:

A law enforcement official says federal investigators have discounted a claim of responsibility for the New York City bombing on the social blogging service Tumblr. The official says investigators looked into it and don’t consider it relevant to the case. The official was not authorized to discuss an ongoing investigation and spoke to The Associated Press on condition of anonymity. Earlier in the day, another official said that the FBI was aware of the posting and evaluating its authenticity. The Saturday night blast in Manhattan injured 29 people. Authorities have not yet determined who is behind the blast or a motive. Gov. Andrew Cuomo said it didn’t appear to be linked to international terrorism.