NACOGDOCHES, Texas — A man claims multiple companies' negligence led to an "extraordinarily large amount of carbon monoxide" to cause the deaths of his wife and their two sons inside their Nacogdoches home in June.

Amy Manning Kirk, 52, William Manning Kirk, 22 and John Standley Kirk, 17, died on June 11 this year at the family's second home on Mystic Lane in Nacogdoches, police said. At the time, officials suspected carbon monoxide poisoning.

In a lawsuit filed on Thursday in Harris County, Brett Kirk, the husband of Amy and father to William and John, said he negotiated with and hired multiple contractors to perform work at this home, including the installation of a new pool heater. The lawsuit states the heater was supposed to fueled by natural gas, but instead it had propane gas.

See Full Page