CHIPLEY, Fla. (AP) - The baby sitter of a missing infant sent a letter to Gov. Charlie Crist months before she disappeared asking him to save the child from her drug-abusing parents.

The Florida Department of Children and Families says it investigated 7-month-old Shannon Dedrick's mother and father after the August complaint, and workers have had "a lot of involvement" with the family.

But DCF Secretary George Sheldon says investigators did not find legal grounds to take the infant away.

Shannon was last seen by her parents at their home early Saturday morning. Searchers have concentrated on the woods surrounding the home, in a remote part of north Florida near the town of Chipley.

The Washington County Sheriff's Office has released little additional information about the case.