Casey Anthony's lead defense attorney has finished his closing argument insisting that the death of her 2-year-old daughter Caylee was an "accident snowballed out of control."

Jose Baez spent most of his four-hour argument Sunday concentrating on holes in the prosecution's forensic evidence, saying it was based on a "fantasy."

The judge overseeing the case indicated that the jury will begin deliberating on Monday.

Prosecutors contend Caylee was suffocated with duct tape by her mother, who then crafted elaborate lies to mislead investigators and her parents.

Baez says the toddler accidentally drowned in the family swimming pool and that her father made the death look like a murder, which he denies.