A report prepared by Craig Beyler for the Texas Forensic Science Commission said that investigators ignored the scientific method for analyzing fires described in
NFPA 921, Guide for Fire and Explosion Investigations and relied on "folklore" and "myths". Beyler also said that Vasquez was incorrect when he said that witnesses saw three different fires, and that they only reported smoke from the fire that began in the bedroom.
[2] Beyler wrote in his report, "in the end, the only (basis) for the determination of arson ... is the burn patterns on the floor of the children's bedroom, the hallway and the porch interpreted as
accelerant spill. None of these determinations have any basis in modern fire science."
[2]
However, the City of Corsicana was extremely critical of Beyler's report, and produced a 21-page response pointing out that his report lacked objectivity, stating "Given some of Dr. Beyler's distortions of the trial record, as described below, it may be that he has assumed the role of an advocate."
[3]