Update, 6:30 p.m.: Police have identified today's Millennium Tower climber as Dan Goodwin. See below for more details.
The San Francisco Police Department confirmed that a climber calling himself "Skyscraperman" was arrested at 5:30 after completing an ascent of San Francisco's Millennium Tower.
The identity of the climber has not yet been released, though "Spider Dan" Goodwin's name has been bandied about on the Internet -- and the Millennium Tower has already been listed among the buildings mounted by the serial wallclimber on his Wikipedia page
Initial signs from the police indicate Goodwin may indeed be the climber. SFPD spokesman Officer Albie Esparza described the man arrested as a 50ish Caucasian referring to himself as "Skyscraperman." That happens to be one of the 54-year-old Goodwin's nicknames, and the title of his autobiography, published earlier this year