The Associated Press

AUSTIN, Texas (AP) - A state-funded report says an arson investigation that led Texas to execute a man was poorly done and could not be supported by fire science or investigative standards.

Cameron Todd Willingham was executed in 2004 over a fire at his Corsicana house that killed his 2-year-old daughter and 1-year-old twins.

The report Tuesday from an independent expert hired by the state mirrors the 2006 findings of fire investigation experts hired by the Innocence Project.

Fire scientist Craig Beyler wrote in the new report, requested by the Texas Forensic Science Commission, that "the investigators had poor understandings to fire science."

Forensic Science Commission chairman Sam Basset says a final report is likely to be issued in early 2010.