California Code, Penal Code - PEN § 1109

(1) The question of the defendant's guilt of the underlying offense shall be first determined.

(2) If the defendant is found guilty of the underlying offense and there is an allegation of an enhancement under subdivision (b) or (d) of Section 186.22, there shall be further proceedings to the trier of fact on the question of the truth of the enhancement. Allegations that the underlying offense was committed for the benefit of, at the direction of, or in association with, a criminal street gang and that the underlying offense was committed with the specific intent to promote, further, or assist in criminal conduct by gang members shall be proved by direct or circumstantial evidence.