Joe Burbank/AP
People Staff
July 13, 2011 06:25 PM

The trial is over, but there’s yet another twist in the Casey Anthony case.

The Orange County, Fla., Sheriff’s Department announced it is investigating allegations of witness tampering in the high-profile trial that ended in stunning acquittals.

Authorities wouldn’t name the witness, but said it wasn’t Anthony’s mother, Cindy, who gave surprising and pivotal testimony for her daughter’s defense.

Detective John Allen said some people have already been interviewed in the investigation.

RELATED: Cindy Anthony Will Not Face Perjury Charges

“In regards to where we will go, it really depends on what information we get and what people come forward to provide additional information,” Allen said.

Anthony, who was found not guilty of murdering her 2-year-old daughter Caylee, is scheduled for release from jail on Sunday.

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