The man has been identified with FBI facial recognition as Steve from
Virginia. They have safely taken him off the side of the building into
police custody. The reason for his stunt hasn't been revealed yet. He
started climbing from the 5th floor and he was grabbed at the 21st
floor after several failed negotiations with the police. A YouTube video
of the climber under the name Leven Thumps has been released. In the
video, he said he wanted to get the attention of Donald Trump but knew
he wouldn't get it, hence his plan to climb his building.
Update: He's been identified as 20 year old Steve and has been taken to
Bell View hospital in New York for psychological evaluation.
His aim for climbing the building was to get to the top of the building and talk to Donald Trump.