The Innocence Project says the Texas Board of Pardons and Paroles has denied its petition to posthumously pardon a Texas man executed for killing his three children in a house fire.
A letter from the parole board released last week says the agency has denied a pardon for Cameron Todd Willingham, whose case has been cited by wrongful-conviction advocates who argue Texas' death-penalty system is severely flawed.
Willingham was put to death in 2004 for the deaths of his three daughters in a house fire in Corsicana.
Fire investigation experts say the science used to convict Willingham was faulty.
The New York-based Innocence Project, which has argued Willingham's case after his death, says the parole board's decision "illustrates that the clemency system is completely broken in Texas."