Model Dayle Haddon died in a suspected carbon monoxide leak at the Bucks County home of her son-in-law, Hallmark movie star Marc Blucas, officials said.

First responders were called to the property just after 6:30 a.m. Friday after receiving reports of a 76-year-old man lying unconscious on the first floor of the suite, the Solebury Township Police Department said.

Canadian model and actress Dayle Haddon was found dead Friday morning in a suspected case of carbon monoxide poisoning, authorities said.