Four men involved in a daring nighttime skydiving stunt from the top of New York's One World Trade Center have been arrested and charged, police say.
A video of the September 11 jump, posted on YouTube, has had hundreds of thousands of hits.
"These men violated the law and placed themselves, as well as others, in danger," said Police Commissioner William Bratton as he announced the arrests.
"Being a thrill-seeker does not give immunity from the law," Bratton said.
Three of the men jumped from the WTC's 104th floor, while one stood watch.
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Police made the arrests after a five and a half month investigation that included a review of video footage, "other electronic and photographic evidence," and unspecified material collected in search warrants.
The men, all New York residents, were identified as Marko Markovich, 27; Andrew Rossig, 33; Kyle Hartwell, 28; and James Brady, 32. They were released on a $US3,500 ($A3,842.35) bail.
Brady was a construction worker at the WTC One, the tallest of the new skyscrapers being built at the site of the Twin Towers destroyed by the September 11, 2001 terrorist attacks.
The men face felony charges of burglary, and misdemeanour charges of reckless endangerment and jumping from a structure.
Security at the site was in the news after a 16-year-old boy was arrested after he crawled through a hole in the fence and made it to the top floor on March 16.
The teen took the elevator to the 88th floor, climbed up to the 104th floor, slipped past a sleeping security guard and spent time taking pictures.
He was later detained and faces a misdemeanour criminal trespass charge. Authorities confiscated his camera and mobile phone.
One World Trade Center is scheduled to open in early 2015.
The site includes five towers, a memorial and museum, a transportation hub, an arts centre and space for retail business.
