Los Angeles parks officials say 24-year-old Vitaly Zdorovetskiy (ze-DOOR'-uh-vest-skee) was taken into custody after clambering up the letter "D'' on Wednesday.
In video taken from atop the sign and later posted on social media, Zdorovetskiy says, "I'm all the way up, nothing can stop me." Television showed him waving a flag from his perch.
Senior Ranger Patrick Joyce tells City News Service that Zdorovetskiy could face charges including trespassing. It wasn't known if he has a lawyer.
Zdorovetskiy has more than 9 million subscribers to his YouTube channel, where his videos show off dozens of pranks.
Attempts to access the iconic sign are an ongoing problem for the city. It's surrounded by a fence and many security cameras.
Tomorrow Filming A Huge Stunt..The welcome BACK video..Thursday Miami..?
— Vitaly Zdorovetskiy (@Vitalyzdtv) May 25, 2016
— Thomas Ryan (@Buckeye158) May 26, 2016