An autopsy has failed to determine how Katie Holmes brother died.
Joseph Jeffrey Fretti, the husband of Holmes' eldest sister Tamera, was found unconscious and in cardiac and respiratory arrest at his mother's home in Sarasota, Florida on 12 April (09).
He was later pronounced dead at The Doctors Hospital.
Initial tests have failed to conclude what caused the 48-year-old's death but Dr. Russell Vega of the Florida District 12 Medical Examiners Office has ruled out foul play.
Vega adds that he will do extensive "tissue tests, blood test and toxicology tests" to determine how Fretti passed away.
Fretti was separated from Tamera, 41, who filed for divorce on 13 February (09).