ORLANDO, Fla. -

A former chief medical examiner in Michigan, who is a world-renowned forensics pathologist, will testify Friday in the Casey Anthony murder trial, according to Local 6 News partner WDIV-TV.

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Former Macomb and Wayne counties Chief Medical Examiner Dr. Werner Spitz will travel to Orlando to testify in the ongoing murder case in which Anthony is accused of killing her 2-year-old daughter, Caylee Anthony.

"I went there and did an autopsy, a second autopsy," Spitz said.

Spitz said he picks and chooses the cases he's involved in, and the Anthony murder trial was one he was particularly interested in. He said he's been involved in the case for a long time.

While prosecutors claim Anthony suffocated Caylee with duct tape, Spitz said the cause of death is undetermined.

Spitz said he is questioning the failure of Dr. Jan C. Garavaglia, chief medical examiner for the District Nine (Orange-Osceola) Medical Examiner's Office in Florida, to open the child's skull during the original autopsy. Spitz said he has seen cases solved due to opening the skull.

"This case brings back another case that I had once where that the fact that the head had not been opened, and when I opened it, it brought out the cause of death in that case," Spitz said.

Anthony and her defense team claim Caylee drowned. Spitz said Caylee's bones showed no sign of trauma and he has not ruled out drowning as a cause of death.

Anthony's defense team has used Spitz's dispute with Garavaglia's autopsy to challenge prosecutors.

Spitz will share his own autopsy findings during the testimony.

Spitz's Background

Spitz immigrated to the US from Israel in 1959. He is a forensic pathologist and toxicology consultant and was the Wayne County Michigan Medical Examiner for 16 years.

Spitz has been involved in several other high-profile cases, including being a part of the review committee for John F. Kennedy's assassination and the Martin Luther King Jr. assassination. He was also involved with the O.J. Simpson wrongful death lawsuit and Phil Spector's murder trial.

Spitz set up an organization to help investigate sudden infant death syndrome.

He has performed nearly 60,000 autopsies.

Watch Local 6 News for more on this story.