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.

Model and activist Dayle Haddon has died from suspected carbon monoxide poisoning at a Pennsylvania home. She was 76. Solebury Township Police responded to a call Dec. 27, just after 6:30 a.m., regarding a man, 76, passed out at a home in Bucks County, police reported. A woman, 76, was found dead on the second floor of the home.

Dayle Haddon has died at the Pennsylvania home of her daughter, journalist Ryan Haddon, and son-in-law, actor Marc Blucas, officials said.