Lee Farley, 36, was convicted Friday of shooting and killing four men in the Hayes Valley neighborhood in 2015.
In a statement, prosecutors said that Farley was found guilty of using a rental car from Walnut Creek to perform a drive-by shooting on an idle Honda Civic, firing 18 shots into the vehicle before fleeing.
All four victims died on the scene.
Farley, who initially pleaded not guilty, was serving time for unrelated charges in 2016 when authorities connected him to the shootings, according to reporting from SFGATE.
“Our strong legal team fought hard, understanding that while nothing we do can bring back their loved ones, that hopefully this verdict brings them some comfort," said District Attorney Brooke Jenkins in the statement.
Farley is set to be sentenced on Dec. 16.
