NEW You can now listen to Fox News articles! "Melrose Place" alum Patrick Muldoon's cause of death has been revealed. According to People , Muldoon died from a myocardial infarction, or more commonly known as a heart attack. The death certificate, obtained by the outlet, lists pulmonary embolism and hereditary coagulopathy as underlying causes. The outlet reported that Muldoon's remains were cremated on April 28 after his death at age 57 on April 19. Patrick Muldoon died on April 19. He was 57. (Michael Tullberg/Getty Images) Muldoon's manager confirmed the news to Variety . Muldoon's sister, Shana Muldoon-Zappa, told TMZ that the actor had spent Sunday morning with his partner, Miriam Rothbart, at their Beverly Hills home before taking a shower. Rothbart later found him unconscious on the bathroom floor.…