Dayle Haddon, an actress and former supermodel, has died of suspected carbon monoxide poisoning. She was 76.

Solebury Township police arrived at the Bucks County, Pennsylvania, home of her son-in-law, Hallmark star Marc Blucas, around 6:30 a.m. local time on Friday, December 27, after receiving a 911 call, CBS News reported.

According to a police report, authorities found an unidentified 76-year-old man unconscious on the first floor of the home. He was taken to Robert Wood Johnson University Hospital in New Brunswick, New Jersey, where he is being treated.

Meanwhile, a woman was found dead in a second floor bedroom. In a statement about it USA todayBucks County Deputy Coroner Eliot Gross confirmed it was Dayle. He added that a toxicology report would be conducted to determine her official cause of death.

Other family members who were in the main house on the property were not affected by the suspected carbon monoxide leak, ABC 6 reported.

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Two paramedics were taken to a local hospital for carbon monoxide exposure, while a police officer was treated at the scene, authorities said.

According to ABC 6, police currently believe fumes from a boiler could be behind the suspected leak.

A representative for Blucas did not immediately respond to PEOPLE’s request for comment on Saturday, December 28.

The investigation is still ongoing, the police said.

According to her website, Dayle signed contracts with four major cosmetics companies during her modeling career – Revlon, Max Factor, Estée Lauder and L’Oréal.

She notably appeared on the cover of the 1973 Sports Illustrated Swimsuit Edition and starred in films like Disney’s The greatest athlete in the world And North Dallas Forty next to Nick Nolte.

Dayle, who has authored two books, Timeless beauty And The 5 principles of timeless livingwas also featured on the covers of Vogue, Elle and Cosmopolitan over the years.

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In an Instagram post on December 27, Dayle’s daughter Ryan Haddon remembered her mother with a lengthy tribute. She shared a selection of photos of her mother’s magazine covers, as well as some photos of the Canadian-born model, who works as an ambassador for the humanitarian aid organization UNICEF.

“The bright light that is Dayle has grown dimmer in this earthly realm. “I have no doubt that I am shining as brightly as ever somewhere where it is needed most,” Ryan began.

“She was a woman in her power, yet gentle and attentive to everyone. Deeply creative and curious, endowed with inner and outer beauty. “Always kind and considerate,” she continued about her famous mother. “In conversation, she was able to penetrate the deepest depths and also reach the highest heights of spiritual understanding. She held up so many, saw that their greatness was sometimes hidden from them, and She always built bridges with her own connections to help them rise. An inspiration for many.

“I always trust the timing of things,” Ryan added in her Instagram caption. “There are no accidents and certainly how we enter and leave this world is mystical and unknowable. She was a generous spiritual being who valued the development of her soul, so I know her journey must be complete here in this dimension.

“I honor her. I bow to her. I adore all the paths and adventures I have taken. “I saw that she is golden and always reaching for the light in all areas of her life,” she concluded. “Thank you to everyone who has been part of her journey and helped shape, enrich and activate her to become the absolute gem she is. She loved so many.

“A pure heart. A rich inner life. Touching so many lives. A life well lived. “Rest in the light, mom,” Ryan captioned her heartfelt tribute.