’90 Day Fiancé’ Star David Murphey’s Cause of Death Revealed

’90 Day Fiancé’ star David Murphey passed away last week … and now we’ve learned more details about his death.

A Clark County, Nevada spokesperson tells TMZ … the reality TV star, who was best known for appearing on “90 Day Fiancé: Before the 90 Days,” died from heart-related problems — including cardiac arrhythmia and hypertensive cardiovascular disease.

We’re told David also had a history of pulmonary embolism — which occurs when a blood clot in a lung creates a blockage. Following these findings, David’s death has been ruled as a natural one.

This update comes a day after David’s family announced his passing on social media … where they revealed the TV personality had faced a number of “health issues over the last several years.”

Sources with direct knowledge told TMZ at the time … David had also been battling liver cancer before his death — he was diagnosed more than a year earlier. Though, sources said at the time that DM faced a series of other health issues … which seemingly led to his death at age 66.

David was best known for appearing on ’90 Day Fiancé’ alongside Lana, his then-girlfriend from Ukraine … who David dated online for 7 years before meeting in person for the first time on the show.

The pair did get engaged while filming ‘Before the 90 Days’ … but the engagement did not last long.

David’s family — including his 2 sisters — have called on fans to honor DM by donating to The Animal Foundation in Las Vegas in his name … as he was a known cat rescue advocate.