Paul “Ace” Frehley‘s cause of death has been revealed nearly a month after the Kiss guitarist died at the age of 74.

Frehley died of “blunt trauma injuries” to his head after an accidental fall, Rolling Stone reported citing a report from the Morris County, New Jersey, medical examiner.

A CT scan revealed the rockstar had multiple contusions, bone fractures to the back of his skull, hemorrhages and a subdural hematoma — the pooling of blood between the dura mater (the outer layer of the brain’s membranes) and the brain itself that occurs after a head injury.

Frehley also had multiple bruises on his hip, thigh and abdomen. Rolling Stone noted that the report mentioned the musician had a stroke as well.

Frehley, the co-founder and lead guitarist for Kiss, died on Oct. 16 after sustaining injuries from a fall in September, Variety reported.

“We are completely devastated and heartbroken,” Frehley’s family said. “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!” they said.

Born on April 27, 1951, Frehley was self-taught in music. In 1973, Frehley, along with Paul Stanley, Gene Simmons and Peter Criss, formed Kiss. The band, famed for its iconic black and white makeup, is known for songs such as “Rock and Roll All Nite,” “Detroit Rock City” and “Black Diamond.” Also known as “The Spaceman,” Frehley also had a solo career, featuring songs such as “Rock Soldiers” and “Rip it Out.”

All four members of Kiss would be inducted into the Rock & Roll Hall of Fame in 2014.

On Oct. 7, Frehley canceled his remaining tour dates for 2025 due to “ongoing medical issues,” a month after his fall.