Catherine O’Hara’s cause of death revealed two weeks after actress died following ‘brief illness’

Catherine O’Hara’s death certificate listed pulmonary embolism as the cause, with rectal cancer underlying, released by LA officials on February 9
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Catherine O’Hara’s death certificate stated that she was cremated, and her husband, Robert 'Bo' Welch, received her remains (Jemal Countess/Getty Images)
Catherine O’Hara’s death certificate stated that she was cremated, and her husband, Robert 'Bo' Welch, received her remains (Jemal Countess/Getty Images)

LOS ANGELES, CALIFORNIA: Catherine O’Hara’s official cause of death has now been disclosed, two weeks after she died following a “brief illness.” The Schitt's Creek star was 71 at the time of her death on January 30. Hours before her death, she was rushed to the hospital in “serious condition.”

WEST HOLLYWOOD, CALIFORNIA - SEPTEMBER 14: Catherine O'Hara attends Apple TV+'s Primetime Emmy Party Red Carpet at Ysabel on September 14, 2025 in West Hollywood, California. (Photo by Tommaso Boddi/Getty Images)
Catherine O'Hara attends Apple TV+'s Primetime Emmy Party Red Carpet at Ysabel on September 14, 2025 in West Hollywood, California (Tommaso Boddi/Getty Images)

Pulmonary embolism listed as cause of death

On Monday, February 9, the Los Angeles County Medical Examiner's Office released O’Hara’s death certificate, which stated that she lost her life due to a pulmonary embolism, a blood clot in her heart. It also listed rectal cancer as the underlying cause.

Additionally, according to the 'Home Alone' actress’ death certificate, she was cremated, and her husband, Robert 'Bo' Welch, received her remains.

ENICE, ITALY - AUGUST 28: Catherine O'Hara attends a red carpet for
Catherine O'Hara attends a red carpet for 'Beetlejuice Beetlejuice' during the 81st Venice International Film Festival at on August 28, 2024 in Venice, Italy (Stefania D'Alessandro/WireImage)

Catherine O’Hara's colleagues feel 'eternally grateful' to work with her 

Catherine O'Hara attends the 2025 Vanity Fair Oscar Party Hosted By Radhika Jones at Wallis Annenberg Center for the Performing Arts on March 02, 2025 in Beverly Hills, California. (Photo by Lionel Hahn/Getty Images)
Catherine O'Hara attends the 2025 Vanity Fair Oscar Party Hosted By Radhika Jones at Wallis Annenberg Center for the Performing Arts on March 02, 2025 in Beverly Hills, California (Lionel Hahn/Getty Images)

The 'Beetlejuice' star’s death devastated her colleagues, with filmmaker Tim Burton sharing on Instagram, “Catherine, I love you . This picture shows how much light you gave to all of us. You were a special part of my life and after life.” 

Macaulay Culkin, who played O’Hara’s son in 'Home Alone', wrote, “Mama. I thought we had time. I wanted more. I wanted to sit in a chair next to you. I heard you. But I had so much more to say. I love you. I’ll see you later.” 

Pedro Pascal, who worked with O’Hara in 'The Last of Us', posted, “Oh, genius to be near you. Eternally grateful. There is less light in my world, this lucky world that had you, will keep you, always. Always ♥️ The one and ONLY #CatherineOHara.”

Seth Rogen called Catherine O’Hara 'a wonderful person'

On February 7, Seth Rogen also paid tribute to O’Hara while accepting the trophy for Best Comedy Series Director at the DGA Awards. During his speech, he said, “Honestly, there’s no one we wish we could thank in person at this moment more than we would love to thank Catherine O’Hara.”

LOS ANGELES, CALIFORNIA - MARCH 24: Catherine O'Hara attends the World Premiere of Apple TV+'s Series
Catherine O'Hara attends the World Premiere of Apple TV+'s Series 'The Studio' at Academy Museum of Motion Pictures on March 24, 2025 in Los Angeles, California (Rodin Eckenroth/FilmMagic)

The 43-year-old further noted that the late star’s 'Home Alone' “made me want to make movies in a lot of ways. In that movie, she’s always yelling ‘Kevin! Kevin!’ and on set we would be yelling ‘Evan! Evan!’ Every time she did, we were like, ‘It’s like, Home Alone.’”

“It was an honor to get to direct her every day, and we worked very hard to make the show good enough to warrant her time and her presence. So, ultimately, we would like to thank the DGA for this, but we would mostly like to thank Catherine O’Hara for being such a wonderful person and for blessing us with your presence,” Rogen added.

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