He was approached by about 5 police officers. They proceeded to search him and his bag, and he was handcuffed and taken away. Two officers also blocked off the stairway in an attempt to keep anyone from witnessing the event. I was moved out, but managed to witness the event. Several hundred nearby.
Situation seems calm.
The march has divided at Rampart station between people doing civil disobedience and those not participating in it. 50 police are following march and around 100 riot police are stationed in a nearby alleyway. The march size is between 500-1000 and swelling. He says that he was isolated from the others arrested at the Animal Rights Action and put in solitary. The situation is calm with an average police presence.