The search group that spent about $100,000 looking for Caylee Anthonys body wants its money back and is considering filing litigation.

Casey Anthony, the girls mother, was acquitted Tuesday of charges that she murdered her two-year-old daughter, but convicted on four misdemeanor counts of lying to investigators after Caylee disappeared in June 2008. (Read full WSJ coverage here.)

Texas Equusearch, a non-profit organization that specializes in assisting law enforcement locate missing persons, responded in July 2008 to a request from Caylees grandparents to help in the search. During the four-month period lasting until that October, more than 4,200 trained workers and volunteers spent at least 20 days searching for Caylees body in places from New York to Ohio to Utah, company founder Tim Miller told the Law Blog in an interview.

Miller said his group consented to help search for Caylee on the premise that she was missing. Thats a notion at odds, he said, with the scenario set out by Anthonys defense team during their opening statement, when they said Caylee had died by drowning in the family pool.

Its only fair to our donors to make an attempt to get that money back, because people donate to us for the purpose of looking for missing children. And in [defense attorney] Jose Baezs own statement, she was never missing, Miller said.