Police identify baseball bat as murder weapon . Hecklers , media greet suspect at Peruvian border . Brother of slain woman says `` this pain wo n't go away '' and vows to kill again.
Police identify baseball bat as murder weapon . Hecklers , media greet suspect at Peruvian border . Brother of slain woman says `` this pain wo n't go away '' Van der Sloot was previously a suspect in Alabama teen 's disappearance .