Lead Detective Yuri Melich revealed that the smell of human decomposition has been discovered in the trunk of the car driven by Casey around the time of Caylee's disappearance.

Detective Melich also stated that hair similar to Caylee's was found in the trunk, along with dirt and an unidentified stain that still need to be investigated.

Also, Deputy Sheriff Jason Forgey, who works with a "cadaver dog," testified that the dog alerted to the odor he's been trained to identify: human decomposition, including traces of blood and bodily fluids. The dog alerted to these scents in the trunk of the car and again in the Anthony family's back yard. A second dog also alerted to the same places, according to testimony.

The investigation into these elements of the case in ongoing.