A 16-year-old boy snuck his way to the top of the tallest building in the United States earlier this week — and there is no video to prove it.

Justin Casquejo's climb up 1 World Trade Center in New York City, considered by some to be among the biggest targets for terrorists in the world, brought to light that the building doesn't have a single functioning camera inside. This helps explain how the teen made it to the top of the 1,776-foot building without so much as butting heads with security. The only video of him from March 16, the night he climbed the tower, comes from a security camera that caught him slipping onto the property through a hole in a fence on Church Street at 4:10 a.m. ET.

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"We take security and these types of infractions extremely seriously and will prosecute violators," Joseph Dunne, chief security officer at the Port Authority of New York and New Jersey, which operates One World Trade Center, said in a statement provided to Mashable. "We continue to reassess our security posture at the site and are constantly working to make the site as secure as possible."

A Port Authority spokesperson told the New York Post that the date on which cameras will start operating is "confidential," and security measures at the tower aren't set to be complete until 2015. (The building won't be completely occupied until 2019.)

Though the perimeter camera did capture Casquejo walking onto the site, no one seemed to be watching the camera. Once inside the fence, he climbed the scaffolding to the sixth floor, got an elevator operator to take him to the 88th floor, and then walked upstairs to the 104th floor, where he walked past a napping security guard. That security guard was later fired.

The teenager, whose Twitter feed is full of photos from other climbing stunts, was finally caught by a building supervisor. He has been charged with misdemeanor trespassing and has become something of a minor celebrity at his New Jersey high school.

UPDATE, March 21, 4:15 p.m. ET Casquejo apologized to anyone who was negatively affected by his adventure.

I seriously apologize to anyone who may have been insulted or felt disrespected by my actions. It was not my intention to do so. — Justin (@JustinCasquejo) March 21, 2014

Look out for more of this teenager, though. In response to that tweet, a Good Morning America producer asked him to follow her so she could send him a DM.