ORLANDO, Fla. -- The man who found the remains of Caylee Anthony was deposed on Thursday by Casey Anthony's defense team, which has added a private investigator to its lineup.

Casey Anthony, 23, remains jailed on first-degree murder charges in the death of her daughter, Caylee, whose remains were discovered in December by Roy Kronk in a wooded area near the Anthony family's east Orange County home.

As the man who reported finding Caylee's body twice, Kronk is a key witness for the prosecution, and a possible target for the defense.

Kronk first reported finding something suspicious in the woods near the Anthonys' home on Aug. 11, 2008, but after three phone calls, a deputy came out and said he found nothing. That deputy, Richard Cain, was later fired from the Sheriff's Office for lying to his superiors about his encounter with Kronk.

"They're trying to defend a first-degree murder charge and they'll ask the questions they want to ask, and we'll answer them and we'll be done," Kronk's attorney, David Evans, said.

A new member of the defense team was seen entering the courtroom on Thursday. Mort Smith is a Chicago-based private investigator who teaches at DePaul University, the same school where fellow defense team member Andrea Lyon teaches.

Smith has been digging into Kronk's personal life for the past several months in an effort to uncover information that might discredit the former meter reader, or at least cast doubt on his story of how he found Caylee.

Anthony's attorneys are likely to ask Kronk about why he returned to the woods and whether someone may have tipped him off that the body was there.

Anthony has pleaded not guilty in her daughter's death, saying a baby sitter took her child. Caylee was 2 years old when she was reported missing in July 2008, about a month after she was last seen alive.

Kronk, who was recently fired from his job as an Orange County meter reader, has not talked publicly since granting an interview to "Good Morning America" in January.

Watch Local 6 for more on this story.