Amarillo, TX - An update now on the little boy found dead inside a cooler in an Amarillo attic over the summer.
Potter Randall Special Crimes says all the tests are back on Miguel Nunez, who was about eight-months-old when he disappeared in 2004.
A forensic pathologist said the body was too badly decomposed to determine what killed Nunez.
His father, Robert Nunez, remains behind bars on an aggravated perjury charge, with a bond of $100,000.
He's accused of lying to a Potter County Grand Jury back in April, saying his son was still alive.
Investigators say Nunez's remains will stay at the University of North Texas DNA lab until authorities determine how to proceed criminally.