Days of Our Livesstar Patrick Muldoon has died following cardiac arrest.

Muldoon, known for his roles inDays of Our Lives,Melrose PlaceandStarship Troopers, died at 57 after suffering a sudden heart attack. His sister, Shana Muldoon-Zappa, confirmed his passing on Sunday at his Beverly Hills home.

Muldoon had coffee with his girlfriend before taking a shower that morning. His girlfriend found him unconscious on the bathroom floor after he took longer than expected, Shana toldTMZ. Paramedics attended the scene and attempted to revive him, but were unable to do so.

Muldoon is survived by his partner, Miriam Rothbart, his parents, Deanna and Patrick Muldoon Sr., his sister and brother-in-law, Shana and Ahmet Zappa, and his niece and nephew, Halo and Arrow Zappa.

This is such heartbreaking news. Pat was a rare kind of person—brilliantly talented, endlessly kind, and generous in spirit. I was so lucky to have worked with him when I first started at Days, he made me feel at ease right away. He brought his unique charm and humor to work…https://t.co/Q5pSQoDdJI

Days of Our Livesco-star Alison Sweeney took to X to grieve Muldoon's sudden passing and to honour his life. 'This is such heartbreaking news. Pat was a rare kind of person, brilliantly talented, endlessly kind and generous in spirit,' she wrote.

'I was so lucky to have worked with him when I first started atDays. He made me feel at ease right away,' she continued. 'He brought his unique charm and humour to work every day. A truly gifted guy, and one who will be profoundly missed.'

Sweeney's post was flooded with comments and condolences, many from Muldoon's long-time fans. 'I am so devastated and so sad and in so shock!!!' one user wrote. 'He was my first crush onDays! I met so manyDaysactors, including Alison, but always wanted to meet Patrick. So sad! Gone too soon! RIP.'

Patrick Muldoon had an estimated net worth of £1.1 million ($1.5 million), according toMarca. His wealth came primarily from film and television roles over a 36-year career.

He is best remembered for playing Austin Reed onDays of Our Livesfrom 1992 to 1995 and again from 2011 to 2012. Muldoon also portrayed the villain Richard Hart onMelrose Placefrom seasons three to five.

Source: International Business Times UK