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The man who used large suction cups to climb up the glass facade of Trump Tower in New York City was identified Thursday as 19-year-old Stephen Rogata from the Washington, D.C. suburb of Great Falls, Virginia, and was charged with reckless endangerment and criminal trespassing.

The climber wore a backpack and used a harness and rope stirrups to fasten himself to the side of the 68-story Manhattan skyscraper on Wednesday. He climbed as high as the 21st floor before officers grabbed him.

Rogata was undergoing psychiatric evaluation at Bellevue Hospital Thursday.

A day before the ascent, police said the climber posted a video on YouTube entitled, "Message to Mr. Trump (why I climbed your tower)." He posted the video under the name Leven Thumps, which is a character in a series of children's fantasy novels by the writer Obert Skye.

"I am an independent researcher seeking a private audience with you to discuss an important matter. I guarantee that it's in your interest to honor this request," he said. "Believe me, if my purpose was not significant, I would not risk my life pursuing it. The reason I climbed your tower is to get your attention. If I had sought this via conventional means, I would be much less likely to have success because you are a busy man with many responsibilities."

The tower is headquarters to Donald Trump's Republican presidential campaign and his business empire. Trump also lives there, though he was in Virginia in the afternoon and was headed to Florida for an evening event.

The man played a slow-motion cat-and-mouse game with his would-be rescuers as he climbed Trump Tower. Officers smashed windows and broke through ventilation ducts to block his progress. Police also lowered themselves toward the man using a window washer's platform.

The climber kept his distance by methodically working his way back and forth across the facade, repeatedly repositioning suction cups resembling a type commonly used by window washers to remove big panes of glass.

The chase ended dramatically just after 6:30 p.m.

As a crowd gasped on the street below, two officers leaned far out of a window, grabbed the climber's arm and harness, and in a flash yanked him from his dangling stirrups. He went through the opening head first, his legs pointed skyward.

"I reached out. I took hold of his hand and I said, `Sir, would you come with me,"' said detective Christopher Williams, who made the grab.

Police had deployed large, inflated crash pads at the scene, but it was unclear how much protection they would have offered if the climber fell.

NYPD Assistant Chief William Aubrey said the man told officers the same thing after he was safely inside the building.

"At no time did he express that he wanted to hurt anybody," he said.

"This man performed a ridiculous and dangerous stunt," Michael Cohen, an executive at the Trump Organization, said in an emailed statement. "I'm 100 percent certain the NYPD had better things to do."

Later Wednesday evening, Trump tweeted "Great job today by the NYPD in protecting the people and saving the climber."

The climber began his ascent from a terrace that is open to the public during the day.

Fox News' Ron Ralston and The Associated Press contributed to this report.