Investigators have received over 100 leads in the case of a missing 10-year-old Volusia County boy and his grandmother. The Volusia County Sheriff said that the mystery surrounding the disappearance of Joshua Bryant and his grandmother, Lillian Martin, 77, is the strangest disappearance he has seen in his career.

Family, FBI Seek Missing Boy, Grandmother
Sister Of Missing Boy Makes Plea For Help
Neighbors Concerned About Missing Couple
FBI Gets Involved In Search For Boy, Grandmother
Police Search For Missing Boy, Grandmother
Boy, Grandmother Missing In Volusia County

"In 27 years, I've never seen anything like this. These people vanished from a very nice area, nice community, with no trace," Sheriff Ben Johnson said. Both have been missing since Saturday. Joanne Miller (pictured, below), the sister and guardian of Joshua, made a public plea for help Tuesday in the search for her brother and grandmother. "We want them back so bad. I'm begging you. If you have any heart, please return them to me," Miller said. Meanwhile, Deltona residents are becoming more concerned as the mysterious case drags on. "My daughter wanted to walk to school this morning, and I told her 'No way.' She's in eighth grade -- no way," Deltona resident Colleen Nash said. "It's a mystery. There's nothing. Nothing. I keep turning the news on hoping to hear something. It's unbelievable." Some residents are beginning to question what the police are trying to rule out -- that the suspect is a family member.

"The fact that the sister (Joanne Miller) is the guardian of (Joshua Bryant) makes people think that it's someone in the family," Evelyn Hawley said. According to public records, the boy's mother died two years ago. Relatives believe that his father is dead too. "This crazy world, the way it is, people do many crazy things for many (reasons). It's unbelievable. I feel sorry for the lady and the kid," Deltona resident Warren Garcia said. An FBI profiler was called in Monday to help Volusia County authorities in the search for the suspect or suspects. "I can't understand it, (just) like everybody else," Miller said on Monday. "As far as clues, there is not a whole lot to go on," Volusia County sheriff's detective Bob Kelly said. "We're conducting this investigation as if foul play is certainly involved or may not be involved. It's a missing persons case. We're looking at it from both angles." Stay with myCFnow.com and WKMG News for more details.

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• May 15, 2001: FBI Joins Search For Boy, Grandmother