Earlier on Thursday, he was handed over to the New York police after agreeing to be extradited to the state to stand trial for murder.
He was taken back to New York by helicopter and faces new federal charges, including stalking.
The murder of the insurance company's CEO, and the subsequent hunt for his killer, has made headlines since the incident outside a hotel on Manhattan on December 4.
The 26-year-old, who is suspected of the murder, has so far been detained in the state of Pennsylvania where he was arrested after being on the run from the state of New York.
It has been known earlier that a handwritten document was found, suggesting that the suspected man harbors ill will towards the power dominance of large corporations in the USA.
