In Oakland, police have announced that Byron Williams, who was injured in a shootout with police on Sunday, was on his way to commit mass murder at offices of the ACLU and the Tides Foundation.

OAKLAND, Calif. (AP) ― Police say a California man who engaged in a freeway shootout with authorities was planning to attack people at the American Civil Liberties Union and another nonprofit.

Oakland Police Officer Jeff Thomason says Byron Williams told investigators he was on his way to San Francisco late Saturday night when California Highway Patrol officers pulled him over on Interstate 580. Williams allegedly opened fire wearing a bulletproof vest and armed with three guns.

Thomason says Williams wanted to target the ACLU and Tides Foundation for their “political views.” Authorities have said he has a deep-rooted anger with left-leaning politics.