Ace Frehley’s Cause of Death Investigation Under Way Following Toxicology Screen and External Body Exam

Following the death of founding KISS guitarist Ace Frehley last Thursday at age 74, the Morris County, New Jersey medical examiner’s office is conducting a series of exams to determine the rocker’s cause of death. According to TMZ, a rep for the examiner’s office said that though an autopsy was not performed on Frehley’s body, the guitarist know for his on-stage Spaceman persona is undergoing a toxicology screening as well as an external body examination to determine how he died; the final cause of death will not be announced until after the toxicology report is completed, which could take several weeks.

At press time a spokesperson for the medical examiner’s office had not returned Billboard‘s request for confirmation on the TMZ report.

Frehley’s family announced his death last week in a statement, writing, “We are completely devastated and heartbroken. In his last moments, we were fortunate enough to have been able to surround him with loving, caring, peaceful words, thoughts, prayers and intentions as he left this earth. We cherish all of his finest memories, his laughter, and celebrate his strengths and kindness that he bestowed upon others. The magnitude of his passing is of epic proportions, and beyond comprehension. Reflecting on all of his incredible life achievements, Ace’s memory will continue to live on forever!”

At the time, TMZ reported that Frehley had been on life support after suffering a brain bleed following a fall at home several weeks earlier. The rock star had canceled a planned performance at the Antelope Valley Fair in Lancaster, California, after suffering what at the time was described as a “minor fall … resulting in a trip to the hospital.” A statement on his Instagram at the time said Frehley was “fine, but against his wishes, his doctor insists that he refrain from travel at this time.”

Less than two weeks later, Frehley’s team announced that he would be canceling all of his remaining appearances for this year “due to some ongoing medical issues.”

Frehley co-founded KISS in 1973 in New York along with singer/guitarist Paul Stanley, basist/singer Gene Simmons and drummer/singer Peter Criss. He remained a core member of the greasepaint rockers’ lineup through 1982 and later returned for the band’s blockbuster reunion tour in 1996, staying on through 2002.

The group known for their elaborate, glittery costumes, character makeup and bombastic rock anthems released some of its most successful albums during Frehley’s tenure, including 1977’s Love Gun and Alive II, both of which charted in the top 10 of the Billboard 200.

“We are devastated by the passing of Ace Frehley,” read a post from the band following Frehley’s death. “He was an essential and irreplaceable rock soldier during some of the most formative foundational chapters of the band and its history. He is and will always be a part of KISS’s legacy. Our thoughts are with Jeanette, Monique and all those who loved him, including our fans around the world.”

KISS will be honored at the 2025 Kennedy Center Honors taping on Dec. 7 — and airing Dec. 23 on CBS — with Frehley becoming be just the third person to receive the honor posthumously.