The skull was found during a training exercise in a Miami canal . A man who said he had been involved with the case told CNN that it is not clear whether the remains are those of the missing girl. Some skulls are disinterred for use in Santeria and Palo Mayombe rituals , officials say .
The skull was found during a training exercise in a Miami canal . The medical examiner is looking into possible causes of death . Some skulls are disinterred for use in Santeria and Palo Mayombe rituals , officials say .