Lawyers for the Florida mom charged with killing her young daughter want to interview the ex-wife of the meter reader who found the little girl's body.

Attorneys for Casey Anthony are asking a judge Monday to let them depose the wife of Roy Kronk. He found the body of 2-year-old Caylee Anthony in woods near her home in December 2008.

Casey Anthony's attorneys say Kronk's ex-wife is offering testimony that supports the contention that Kronk should be a suspect. Detectives have said repeatedly that Kronk is not a suspect and that the evidence points to Casey Anthony.

Meanwhile, Casey Anthony was back in court Monday where she pleaded guilty to unrelated check fraud charges. She was sentenced to 412 days time served and one year of supervised probation, MyFoxOrlando.com reported.

Anthony has pleaded not guilty to first-degree murder and says a baby sitter kidnapped Caylee.

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The Associated Press contributed to this report.