Search for missing Fla. mother continues

UNDATED (WHDH) -- Investigators are taking a new tactic in the search for a missing Florida mother. She vanished six months ago, shortly after an appearance on television’s people's court.

Police are calling in reinforcements to find the person responsible.

Despite more than 700 tips to police, investigators still don't know what happened to Michelle Parker.

Her family's anguish remains raw.

"If there is any mother or father on the planet that has no idea what I'm going through, God bless you," said Yvonne Stewart, Parker’s mother.

Michelle Parker vanished the day she and her ex-fiancé Dale Smith appeared in a taped episode of the people's court as they argued over an engagement ring.

Thursday, a new police panel made up of investigators from all over the state gathered to look at clues. They say the evidence continues to lead them back to their initial suspicion:

“In this case we do have a very serious person of interest. We all know that,” an official said.

That person, they say is Dale Smith.

“We've had a person of interest since day one. And all we need to do is fit that missing piece of the puzzle," an official said.

Dale Smith has denied any involvement. His lawyer tells NBC News Smith remains concerned for Parker, the mother of his children.

“I don't know who did it for sure, and I don't know where they put her, how disrespectful that is. Man up. Do the right thing," Stewart said.

Among the significant evidence found so far: Parker’s cell phone tossed in an Orange County lake. And the last known image of parker is at a drive through just hours before she vanished.

Parker's twins remain in the custody of their father, Dale Smith. Police believe someone out there knows something and has not come forward.