Preliminary DNA tests say the victim could be human , he says . Tests also find ` ` unusually large concentration of chloroform '' in trunk . Casey Brown is charged with first - degree murder in daughter 's disappearance . Lawyer 's spokesman says evidence does n't link Casey to any wrongdoing .
Preliminary lab tests say decomposition evidence could be human , report says . Tests also find `` unusually large concentration of chloroform '' in trunk . Casey Anthony is charged with first-degree murder in daughter 's disappearance . Lawyer 's spokesman says evidence does n't link Casey to any wrongdoing .