UPDATE: The NYPD has successfully grabbed the climber as he reached the 22nd floor and brought him inside the building.
UPDATE: The Trump campaign has responded to the daredevil's stunt.
"This man performed a ridiculous and dangerous stunt," Michael Cohen, executive Vice President in the Trump Organization, said in a statement. "There's damage to the building and he caused the unnecessary deployment of New York's finest to protect his safety and the safety of everyone in the building. He's caused the shutdown of traffic on Fifth Avenue. I'm 100 percent certain the NYPD had better things to do. If Mr. Trump were here he'd be thanking law enforcement for the job they're doing."
In an athletic feat that may rival the participants in the Rio Olympic Games, a man is currently scaling New York's Trump Tower using suction cups.
ABC News has a live feed of the daredevil's climb on their Facebook page.
The motive of the climber is still unknown.