One thing that is known, however, is that the Nissan Rogue SUV used in the rampage was registered in Berkeley.
On Wednesday night, if you recall, a male driver allegedly mowed down random cyclists in four different locations in San Francisco: the 2700 block of Harrison Street, the 2800 block of 24th Street, at the intersection of 23rd and Pennsylvania streets, and at 17th and Missouri street. Three of the four victims were hospitalized, and are expected to recover.
SFist will update as soon as we learn more about the suspect in custody.
Update: 4:32 - Streetsblog notes: "SFPD's Lt. Tomioka: Car rampage suspect medically rejected from jail. Has to be cleared medically before they can release his name."
Update 5:00 - CBS 5 Joe Vasquez (who did an excellent TV news report on the hit and run rampage, by the way) says that the unidentified suspect was arrested after -- get this -- walking into an Albany police station to falsely report that his SUV was carjacked in San Francisco. Oops.