Official cause of death of ‘American Pickers’ star Frank Fritz revealed

Late ‘American Pickers’ star Frank Frits died of a stroke, TMZ has learned … according to officials.

According to Frank’s death certificate, obtained by TMZ, the immediate cause of death is “late sequelae of a cerebral infarction”… medical jargon for a stroke.

The document says that Frank’s fatal stroke was the result of a brain disease… a condition that affects blood flow and blood vessels in the brain.

Frank also suffered from aortic stenosis – a chronic condition that makes it difficult for blood to flow from the heart to the rest of the body – and COPD… according to the certificate, with both conditions playing a role in his death.

As we reported… Frank died September 30 in a Midwestern hospice, surrounded by friends, including his old “American Pickers” costar Mike Wolfe.

Frank’s representative previously told us that he died from a stroke he had several years ago… and that is confirmed in the death certificate.

According to the documents, the official time of death was 8:50 PM, the manner of death was natural and his body has since been cremated.

Frank turned 60.