Newcomer Virginia Welch, whose website describes her as an "actress, model, martial artist, dancer," has taken over the role.
Body of Proof Planning Casey Anthony-Inspired Episode
According to People, DeVeaux's decision to leave the project was mutual.
Welch will join cast members Rob Lowe, who plays prosecutor Jeff Ashton and "The Office" star Oscar Nunez, who plays Anthony's defense attorney Jose Baez. Kevin Dunn and Marina Stephenson play Anthony's parents.
The film will chronicle Anthony's trial and eventual acquittal for the murder of her two-year-old daughter.