During a re-examination of the case in 1975, the U.S. Supreme Court ordered expert examination of the possibility of a second gun having been used, and the conclusion of the experts was that there was little or no evidence to support this theory.
1975年对这一案件进行重新审查期间，洛杉矶高等法院下令对现场是否有另一支开过火的枪存在予以调查，专家的结论是极少或完全没有证据可以证明这一理论。