The body armor-clad man who kept a dozen California Highway Patrol officers in a prolonged gunbattle late Saturday night was on his way to San Francisco with a plan to "start a revolution" by attacking prominent people at the American Civil Liberties Union and the Tides Foundation, court documents state.

Though details of Byron Williams' plan were not released, authorities said they had gathered enough information to conclude that the 45-year-old was destined to create havoc had he not been stopped by CHP officers on westbound Interstate 580 just north of the Grand Avenue exit in Oakland.

"His intention was to start a revolution by traveling to San Francisco and killing people of importance at the Tides Foundation and ACLU," a probable-cause warrant submitted to the court states.