Pope Francis' official cause of death revealed in announcement from Vatican

Fox News' Alex Hogan confirmed in an on-air report that the Pope had a stroke in the early morning of April 21, went into a coma and then had a heart attack.

The official death announcement was made at the Pope's residence in the Chapel of St. Martha on Monday.

Pope Francis served for 12 years and advocated for causes including migrant rights, climate change and LGBTQ inclusion, Hogan reported.

The day before his death, the Pope met with Vice President JD Vance in Vatican City.

Strokes are the fifth leading cause of death in the United States and a primary cause of disability, per the American Stroke Association.

"Stroke is injury to the brain from impairment of blood flow," Dr. Sandeep Kumar, a neurologist at the Beth Israel Deaconess Medical Center in Boston, Massachusetts, previously told Fox News Digital.

While there are two main types of strokes, ischemic and hemorrhagic, ischemic strokes are the most common, accounting for 87% of all cases, according to the association. 

In the case of a hemorrhagic stroke, the blood vessel supplying the brain ruptures, leading to bleeding within the brain tissue, according to Kumar.

"Bleeding can directly damage brain cells or deprive the surrounding tissues of receiving adequate oxygen and nutrients," he added.

Fox News Digital's Ashlyn Messier contributed to this report.