Dayle Haddon, Canadian model and actress, found dead after suspected carbon monoxide leak in Solebury Twp., Bucks County

SOLEBURY TWP. On. (WPVI) — A Canadian model and actress is dead and another man is in the hospital after a suspected carbon monoxide leak in Solebury Twp., Bucks County.

A 911 call came in just after 1 p.m. 6:30 a.m. Friday about a 76-year-old man who was semi-unconscious on the first floor of a cottage on a property in the 6900 block of Phillips Mill Road.

The doctors removed the man from the building and drove him to the hospital.

Rescuers then learned of a 76-year-old woman who was also in the home. They found her unconscious in a second-floor bedroom and tried to revive her, but she was pronounced dead at the scene.

Family members in the main house on the property were not affected.

The Bucks County Coroner identified the 76-year-old as Dayle Haddon, who achieved international fame in the 70s and graced the cover of fashion magazines.

In August she was featured in Vogue. She also acted in films and in recent years became an activist for several causes.

“She was smart, elegant. She always remembered you,” said Sandy Linter, a well-known makeup artist and longtime friend of Haddon’s, in an exclusive interview with Action News. “It was a tragic accident. I’m sorry. I’m so sorry for her family.”

Firefighters at the scene discovered a high level of carbon monoxide in the property. Police say fumes from a boiler may be to blame.

“It is believed that a heating unit, a boiler unit, is the source of carbon monoxide. The initial readings on EMS and fire company arrival were extremely high, so we are treating this as a carbon monoxide poisoning incident,” said Det. Sgt. Jonathan Koretzky of Solebury Twp. The police department.

Two doctors were taken to Doylestown Hospital for carbon monoxide exposure, and a Solebury Twp. police officer was treated at the scene.

WATCH: Celebrity makeup artist Sandy Linter talks about Dayle Haddon’s death | EXCLUSIVE

The circumstances of this incident remain under investigation.

Property records show the house belongs to actor Marc Blucas and his wife, journalist and producer Ryan Haddon Blucas. They bought the property for $1 million in 2012.

Marc Blucas is seen in a Hallmark Channel interview where he talks about rebuilding the home that dates back to the 18th century. He is known for roles in Buffy the Vampire Slayer and Hallmark movies.

On Friday night, Dayle Haddon’s daughter, Ryan, posted a tribute on Instagram said: “She held up so many, saw their greatness sometimes hidden from them and always built bridges with her own connections to help them rise. She was the greatest champion of all. An inspiration to many.”

Firefighters would like to remind the public that carbon monoxide is odorless, colorless and tasteless. It can be dangerous all year round, but especially in the colder months. They say prevention and detection are key.

“Prevention is about keeping your heaters, appliances, fireplaces, your hot water tank and your chimneys in good working order. Detection is about having a working, at least one working, carbon monoxide detector in the house,” says Deputy Chief Mark Nissenfeld with New Hope Eagle Fire Company.