A Tumblr blog taking credit for Saturday's blasts in New York City is "not relevant to the case", according to police.
The explosion hit a busy area of the Chelsea neighbourhood of Manhattan - an attack that has since been labelled an act of terrorism by the state's governor.
"I'm the NY bomber," the blog's post reads. "This will be my manifesto."
Law enforcement have told the Associated Press the Tumblr account is not relevant to the bombing case. It's not clear the motive behind the bogus blog.
So far it has just two entries, both calls for the LQBT community to respond to discrimination with violence.
The first entry, titled Manufacturing Test Explosives, describes the New York City explosions and claims the author "made errors" and will not make the "same mistake again".
"I cannot live in a world where homosexuals like myself as well as the rest of the LGBTQ+ community are looked down upon society."
The blogger said they would not "stand by while there is inequality".
"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!
"This is not the end; this is just the beginning.
"I will be remembered. I will make a difference. I will eliminate my targets before it is too late."
The second post was a musing on the morality of taking human lives.
"It seems that nobody cares; however, what if people from the LGBTQ+ community started lashing out in response to the violence and oppression we face with violence and possibly oppression?
"I'm sure that would give people a reason to not stand by while so many people are being oppressed."
The post came to light not long after the New York Post reported an unidentified man claimed to 911 operators to be standing at 23rd St and Seventh Ave moments after the explosion.
"I'm looking at the explosion down the block," he reportedly said. "There will be more."
New York Governor Andrew Cuomo has declared the blast an act of terrorism but said it has no evidence of ties to an international terror group.
"A bomb exploding in New York is obviously an act of terrorism, but it's not linked to international terrorism.
"In other words, we find no ISIS connection.
"They want to instil terror. They want to make you worry about going into New York. We're not going to let them instil fear."
The 29 injured victims have been released from hospital.